Vulnerability Details : CVE-2020-25693
Potential exploit
A flaw was found in CImg in versions prior to 2.9.3. Integer overflows leading to heap buffer overflows in load_pnm() can be triggered by a specially crafted input file processed by CImg, which can lead to an impact to application availability or data integrity.
Vulnerability category: OverflowMemory Corruption
Products affected by CVE-2020-25693
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:cimg:cimg:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-25693
0.56%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 66 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-25693
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:P |
8.6
|
4.9
|
NIST | |
|
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H |
2.8
|
5.2
|
NIST |
CWE ids for CVE-2020-25693
-
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Assigned by: secalert@redhat.com (Primary)
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2020-25693
-
https://bugzilla.redhat.com/show_bug.cgi?id=1893377
1893377 – (CVE-2020-25693) CVE-2020-25693 CImg: multiple integer overflows leading to heap-based buffer-overflowsExploit;Issue Tracking;Patch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ERBZALTF7LXN2LZLPGAUSVMV53GHHTUC/
[SECURITY] Fedora 34 Update: CImg-2.9.7-1.fc34 - package-announce - Fedora Mailing-ListsThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QZ3NPLYXZWEL7HETIFZVCXEZZ2WYYRWA/
[SECURITY] Fedora 32 Update: gmic-2.9.7-1.fc32 - package-announce - Fedora Mailing-ListsThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MJ5Q7NNUPXATTBUKHFKIYYAV5GJDYCZL/
[SECURITY] Fedora 33 Update: gmic-2.9.7-1.fc33 - package-announce - Fedora Mailing-ListsThird Party Advisory
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