Vulnerability Details : CVE-2015-5523
The ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service (crash) via vectors involving multiple whitespace characters before an empty href, which triggers a large memory allocation.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2015-5523
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:a:htacg:tidy:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-5523
1.99%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 89 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-5523
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST |
CWE ids for CVE-2015-5523
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-5523
-
http://www.ubuntu.com/usn/USN-2695-1
USN-2695-1: HTML Tidy vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2015/07/13/7
oss-security - Re: CVE Request - tidy 0.99 / tidy5 heap-buffer-overflowExploit
-
https://support.apple.com/HT205267
About the security content of OS X El Capitan v10.11 - Apple SupportThird Party Advisory
-
http://www.securitytracker.com/id/1033703
Apple OS X Multiple Flaws Let Remote and Local Users Execute Arbitrary Code, Obtain Potentially Sensitive Information, and Deny Service and Let Local Users Gain Elevated Privileges - SecurityTracker
-
http://www.debian.org/security/2015/dsa-3309
Debian -- Security Information -- DSA-3309-1 tidyThird Party Advisory
-
http://www.securityfocus.com/bid/75037
Tidy 'tmbstr.c' Heap Based Buffer Overflow Vulnerability
-
http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html
Apple - Lists.apple.comMailing List;Third Party Advisory
-
http://lists.apple.com/archives/security-announce/2015/Sep/msg00005.html
Apple - Lists.apple.comMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2015/07/15/3
oss-security - Re: CVE Request - tidy 0.99 / tidy5 heap-buffer-overflow
-
https://support.apple.com/HT205212
About the security content of iOS 9 - Apple SupportThird Party Advisory
-
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
Apple - Lists.apple.comMailing List;Third Party Advisory
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https://github.com/htacg/tidy-html5/issues/217#issuecomment-108565501
tidy heap-buffer-overflow · Issue #217 · htacg/tidy-html5 · GitHubExploit
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http://www.openwall.com/lists/oss-security/2015/06/04/2
oss-security - CVE Request - tidy 0.99 / tidy5 heap-buffer-overflowExploit
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https://support.apple.com/HT205213
About the security content of watchOS 2 - Apple SupportThird Party Advisory
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