Vulnerability Details : CVE-2020-21049
Potential exploit
An invalid read in the stb_image.h component of libsixel prior to v1.8.5 allows attackers to cause a denial of service (DOS) via a crafted PSD file.
Vulnerability category: Denial of service
Products affected by CVE-2020-21049
- cpe:2.3:a:libsixel_project:libsixel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-21049
0.41%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 59 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-21049
| 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 | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2020-21049
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-21049
-
https://github.com/saitoha/libsixel/blob/master/ChangeLog
libsixel/ChangeLog at master · saitoha/libsixel · GitHubRelease Notes;Third Party Advisory
-
https://github.com/saitoha/libsixel/commit/0b1e0b3f7b44233f84e5c9f512f8c90d6bbbe33d
Introduce SIXEL_ALLOCATE_BYTES_MAX macro and limit allocation size to… · saitoha/libsixel@0b1e0b3 · GitHubPatch;Release Notes;Third Party Advisory
-
https://github.com/saitoha/libsixel/issues/74
Address Sanitizer: invalid read at stb_image.h:5669 · Issue #74 · saitoha/libsixel · GitHubExploit;Issue Tracking;Patch;Third Party Advisory
-
https://github.com/saitoha/libsixel/releases/tag/v1.8.5
Release v1.8.5 security update · saitoha/libsixel · GitHubRelease Notes;Third Party Advisory
-
https://bitbucket.org/netbsd/pkgsrc/commits/970a81d31ec7498e04d09b6b7771cef35f63cd28
404 — BitbucketBroken Link
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