Vulnerability Details : CVE-2021-46700
Potential exploit
In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-46700
- cpe:2.3:a:libsixel_project:libsixel:1.8.6:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-46700
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 45 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-46700
| 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-2021-46700
-
The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-46700
-
https://github.com/saitoha/libsixel/issues/158
double free or corruption in encoder.c:831 · Issue #158 · saitoha/libsixel · GitHubExploit;Issue Tracking;Third Party Advisory
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