Xmlsoft » Libxml2 : Security Vulnerabilities

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#	CVE ID	CWE ID	Vulnerability Type(s)	Publish Date	Update Date	Score	Gained Access Level	Access	Complexity	Authentication	Conf.	Integ.	Avail.
1	CVE-2022-29824	190	Overflow	2022-05-03	2022-05-18	4.3	None	Remote	Medium	Not required	None	None	Partial
In libxml2 before 2.9.14, several buffer handling functions in buf.c (xmlBuf) and tree.c (xmlBuffer) don't check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted, multi-gigabyte XML file. Other software using libxml2's buffer functions, for example libxslt through 1.1.35, is affected as well.
2	CVE-2022-23308	416		2022-02-26	2022-05-17	4.3	None	Remote	Medium	Not required	None	None	Partial
valid.c in libxml2 before 2.9.13 has a use-after-free of ID and IDREF attributes.
3	CVE-2021-3541	776	DoS Bypass	2021-07-09	2022-03-01	4.0	None	Remote	Low	???	None	None	Partial
A flaw was found in libxml2. Exponential entity expansion attack its possible bypassing all existing protection mechanisms and leading to denial of service.
4	CVE-2021-3537	476		2021-05-14	2022-04-20	4.3	None	Remote	Medium	Not required	None	None	Partial
A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability.
5	CVE-2021-3518	416		2021-05-18	2022-04-20	6.8	None	Remote	Medium	Not required	Partial	Partial	Partial
There's a flaw in libxml2 in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by an application linked with libxml2 could trigger a use-after-free. The greatest impact from this flaw is to confidentiality, integrity, and availability.
6	CVE-2021-3517	787		2021-05-19	2022-04-20	7.5	None	Remote	Low	Not required	Partial	Partial	Partial
There is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted file to be processed by an application linked with the affected functionality of libxml2 could trigger an out-of-bounds read. The most likely impact of this flaw is to application availability, with some potential impact to confidentiality and integrity if an attacker is able to use memory information to further exploit the application.
7	CVE-2020-24977	125		2020-09-04	2022-05-12	6.4	None	Remote	Low	Not required	Partial	None	Partial
GNOME project libxml2 v2.9.10 has a global buffer over-read vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c. The issue has been fixed in commit 50f06b3e.
8	CVE-2020-7595	835		2020-01-21	2022-05-12	5.0	None	Remote	Low	Not required	None	None	Partial
xmlStringLenDecodeEntities in parser.c in libxml2 2.9.10 has an infinite loop in a certain end-of-file situation.
9	CVE-2019-20388	401		2020-01-21	2022-04-20	5.0	None	Remote	Low	Not required	None	None	Partial
xmlSchemaPreRun in xmlschemas.c in libxml2 2.9.10 allows an xmlSchemaValidateStream memory leak.
10	CVE-2019-19956	772		2019-12-24	2021-07-21	5.0	None	Remote	Low	Not required	None	None	Partial
xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.
11	CVE-2018-14567	835	DoS	2018-08-16	2020-09-10	4.3	None	Remote	Medium	Not required	None	None	Partial
libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035 and CVE-2018-9251.
12	CVE-2018-14404	476	DoS	2018-07-19	2020-09-10	5.0	None	Remote	Low	Not required	None	None	Partial
A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case. Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable to a denial of service attack due to a crash of the application.
13	CVE-2018-9251	835	DoS	2018-04-04	2019-10-03	2.6	None	Remote	High	Not required	None	None	Partial
The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.
14	CVE-2017-18258	770	DoS	2018-04-08	2020-09-10	4.3	None	Remote	Medium	Not required	None	None	Partial
The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.
15	CVE-2017-16932	835		2017-11-23	2022-04-08	5.0	None	Remote	Low	Not required	None	None	Partial
parser.c in libxml2 before 2.9.5 does not prevent infinite recursion in parameter entities.
16	CVE-2017-16931	119	Overflow	2017-11-23	2021-07-20	7.5	None	Remote	Low	Not required	Partial	Partial	Partial
parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.
17	CVE-2017-15412	416		2018-08-28	2018-10-25	6.8	None	Remote	Medium	Not required	Partial	Partial	Partial
Use after free in libxml2 before 2.9.5, as used in Google Chrome prior to 63.0.3239.84 and other products, allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
18	CVE-2017-9050	125		2017-05-18	2021-06-29	5.0	None	Remote	Low	Not required	None	None	Partial
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.
19	CVE-2017-9049	125		2017-05-18	2021-06-29	5.0	None	Remote	Low	Not required	None	None	Partial
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.
20	CVE-2017-9048	119	Overflow	2017-05-18	2021-06-29	5.0	None	Remote	Low	Not required	None	None	Partial
libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a stack-based buffer overflow. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. At the end of the routine, the function may strcat two more characters without checking whether the current strlen(buf) + 2 < size. This vulnerability causes programs that use libxml2, such as PHP, to crash.
21	CVE-2017-9047	119	Overflow	2017-05-18	2021-06-29	5.0	None	Remote	Low	Not required	None	None	Partial
A buffer overflow was discovered in libxml2 20904-GITv2.9.4-16-g0741801. The function xmlSnprintfElementContent in valid.c is supposed to recursively dump the element content definition into a char buffer 'buf' of size 'size'. The variable len is assigned strlen(buf). If the content->type is XML_ELEMENT_CONTENT_ELEMENT, then (i) the content->prefix is appended to buf (if it actually fits) whereupon (ii) content->name is written to the buffer. However, the check for whether the content->name actually fits also uses 'len' rather than the updated buffer length strlen(buf). This allows us to write about "size" many bytes beyond the allocated memory. This vulnerability causes programs that use libxml2, such as PHP, to crash.
22	CVE-2017-8872	125	DoS	2017-05-10	2020-09-10	6.4	None	Remote	Low	Not required	Partial	None	Partial
The htmlParseTryOrFinish function in HTMLparser.c in libxml2 2.9.4 allows attackers to cause a denial of service (buffer over-read) or information disclosure.
23	CVE-2017-7376	119	Exec Code Overflow	2018-02-19	2019-05-17	10.0	None	Remote	Low	Not required	Complete	Complete	Complete
Buffer overflow in libxml2 allows remote attackers to execute arbitrary code by leveraging an incorrect limit for port values when handling redirects.
24	CVE-2017-7375	611		2018-02-19	2018-03-18	7.5	None	Remote	Low	Not required	Partial	Partial	Partial
A flaw in libxml2 allows remote XML entity inclusion with default parser flags (i.e., when the caller did not request entity substitution, DTD validation, external DTD subset loading, or default DTD attributes). Depending on the context, this may expose a higher-risk attack surface in libxml2 not usually reachable with default parser flags, and expose content from local files, HTTP, or FTP servers (which might be otherwise unreachable).
25	CVE-2017-5969	476	DoS	2017-04-11	2022-04-08	2.6	None	Remote	High	Not required	None	None	Partial
DISPUTED libxml2 2.9.4, when used in recover mode, allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted XML document. NOTE: The maintainer states "I would disagree of a CVE with the Recover parsing option which should only be used for manual recovery at least for XML parser."
26	CVE-2017-5130	787	Overflow Mem. Corr.	2018-02-07	2022-04-08	6.8	None	Remote	Medium	Not required	Partial	Partial	Partial
An integer overflow in xmlmemory.c in libxml2 before 2.9.5, as used in Google Chrome prior to 62.0.3202.62 and other products, allowed a remote attacker to potentially exploit heap corruption via a crafted XML file.
27	CVE-2016-9598	125	DoS	2018-08-16	2020-11-16	4.3	None	Remote	Medium	Not required	None	None	Partial
libxml2, as used in Red Hat JBoss Core Services, allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted XML document. NOTE: this vulnerability exists because of a missing fix for CVE-2016-4483.
28	CVE-2016-9597	119	DoS Overflow	2018-07-30	2019-10-09	5.0	None	Remote	Low	Not required	None	None	Partial
It was found that Red Hat JBoss Core Services erratum RHSA-2016:2957 for CVE-2016-3705 did not actually include the fix for the issue found in libxml2, making it vulnerable to a Denial of Service attack due to a Stack Overflow. This is a regression CVE for the same issue as CVE-2016-3705.
29	CVE-2016-9596	400	DoS	2018-08-16	2020-11-16	4.3	None	Remote	Medium	Not required	None	None	Partial
libxml2, as used in Red Hat JBoss Core Services and when in recovery mode, allows context-dependent attackers to cause a denial of service (stack consumption) via a crafted XML document. NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-3627.
30	CVE-2016-5131	416	DoS	2016-07-23	2019-03-26	6.8	None	Remote	Medium	Not required	Partial	Partial	Partial
Use-after-free vulnerability in libxml2 through 2.9.4, as used in Google Chrome before 52.0.2743.82, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to the XPointer range-to function.
31	CVE-2016-4658	119	DoS Exec Code Overflow Mem. Corr.	2016-09-25	2019-03-13	10.0	None	Remote	Low	Not required	Complete	Complete	Complete
xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.
32	CVE-2016-4483	502	DoS	2017-04-11	2021-06-29	5.0	None	Remote	Low	Not required	None	None	Partial
The xmlBufAttrSerializeTxtContent function in xmlsave.c in libxml2 allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a non-UTF-8 attribute value, related to serialization. NOTE: this vulnerability may be a duplicate of CVE-2016-3627.
33	CVE-2016-4449	20	DoS	2016-06-09	2018-01-18	5.8	None	Remote	Medium	Not required	Partial	None	Partial
XML external entity (XXE) vulnerability in the xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.4, when not in validating mode, allows context-dependent attackers to read arbitrary files or cause a denial of service (resource consumption) via unspecified vectors.
34	CVE-2016-4448	134		2016-06-09	2019-12-27	10.0	None	Remote	Low	Not required	Complete	Complete	Complete
Format string vulnerability in libxml2 before 2.9.4 allows attackers to have unspecified impact via format string specifiers in unknown vectors.
35	CVE-2016-4447	119	DoS Overflow	2016-06-09	2019-03-26	5.0	None	Remote	Low	Not required	None	None	Partial
The xmlParseElementDecl function in parser.c in libxml2 before 2.9.4 allows context-dependent attackers to cause a denial of service (heap-based buffer underread and application crash) via a crafted file, involving xmlParseName.
36	CVE-2016-3705	20	DoS	2016-05-17	2018-10-30	5.0	None	Remote	Low	Not required	None	None	Partial
The (1) xmlParserEntityCheck and (2) xmlParseAttValueComplex functions in parser.c in libxml2 2.9.3 do not properly keep track of the recursion depth, which allows context-dependent attackers to cause a denial of service (stack consumption and application crash) via a crafted XML document containing a large number of nested entity references.
37	CVE-2016-3627	20	DoS	2016-05-17	2018-10-30	5.0	None	Remote	Low	Not required	None	None	Partial
The xmlStringGetNodeList function in tree.c in libxml2 2.9.3 and earlier, when used in recovery mode, allows context-dependent attackers to cause a denial of service (infinite recursion, stack consumption, and application crash) via a crafted XML document.
38	CVE-2016-2073	119	DoS Overflow	2016-02-12	2020-04-23	4.3	None	Remote	Medium	Not required	None	None	Partial
The htmlParseNameComplex function in HTMLparser.c in libxml2 allows attackers to cause a denial of service (out-of-bounds read) via a crafted XML document.
39	CVE-2016-1840	119	DoS Exec Code Overflow Mem. Corr.	2016-05-20	2019-03-25	6.8	None	Remote	Medium	Not required	Partial	Partial	Partial
Heap-based buffer overflow in the xmlFAParsePosCharGroup function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.
40	CVE-2016-1839	125	DoS	2016-05-20	2019-03-25	4.3	None	Remote	Medium	Not required	None	None	Partial
The xmlDictAddString function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.
41	CVE-2016-1838	125	DoS	2016-05-20	2019-03-25	4.3	None	Remote	Medium	Not required	None	None	Partial
The xmlPArserPrintFileContextInternal function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.
42	CVE-2016-1837	416	DoS	2016-05-20	2019-03-25	4.3	None	Remote	Medium	Not required	None	None	Partial
Multiple use-after-free vulnerabilities in the (1) htmlPArsePubidLiteral and (2) htmlParseSystemiteral functions in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allow remote attackers to cause a denial of service via a crafted XML document.
43	CVE-2016-1836	416	DoS	2016-05-20	2019-03-25	4.3	None	Remote	Medium	Not required	None	None	Partial
Use-after-free vulnerability in the xmlDictComputeFastKey function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to cause a denial of service via a crafted XML document.
44	CVE-2016-1834	119	DoS Exec Code Overflow Mem. Corr.	2016-05-20	2019-03-25	9.3	None	Remote	Medium	Not required	Complete	Complete	Complete
Heap-based buffer overflow in the xmlStrncat function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.
45	CVE-2016-1833	125	DoS	2016-05-20	2019-03-25	4.3	None	Remote	Medium	Not required	None	None	Partial
The htmlCurrentChar function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.
46	CVE-2016-1762	119	DoS Overflow	2016-03-24	2019-03-26	5.8	None	Remote	Medium	Not required	Partial	None	Partial
The xmlNextChar function in libxml2 before 2.9.4 allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.
47	CVE-2015-8806		DoS	2016-04-13	2020-09-11	5.0	None	Remote	Low	Not required	None	None	Partial
dict.c in libxml2 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via an unexpected character immediately after the "<!DOCTYPE html" substring in a crafted HTML document.
48	CVE-2015-8710	119	DoS Overflow +Info	2016-04-11	2020-02-26	7.5	None	Remote	Low	Not required	Partial	Partial	Partial
The htmlParseComment function in HTMLparser.c in libxml2 allows attackers to obtain sensitive information, cause a denial of service (out-of-bounds heap memory access and application crash), or possibly have unspecified other impact via an unclosed HTML comment.
49	CVE-2015-8317	119	Overflow +Info	2015-12-15	2017-09-14	5.0	None	Remote	Low	Not required	Partial	None	None
The xmlParseXMLDecl function in parser.c in libxml2 before 2.9.3 allows context-dependent attackers to obtain sensitive information via an (1) unterminated encoding value or (2) incomplete XML declaration in XML data, which triggers an out-of-bounds heap read.
50	CVE-2015-8242	119	DoS Overflow +Info	2015-12-15	2019-03-08	5.8	None	Remote	Medium	Not required	Partial	None	Partial
The xmlSAX2TextNode function in SAX2.c in the push interface in the HTML parser in libxml2 before 2.9.3 allows context-dependent attackers to cause a denial of service (stack-based buffer over-read and application crash) or obtain sensitive information via crafted XML data.

Total number of vulnerabilities : 78 Page : 1 (This Page)2