Vulnerability Details : CVE-2021-33461
An issue was discovered in yasm version 1.3.0. There is a use-after-free in yasm_intnum_destroy() in libyasm/intnum.c.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-33461
- cpe:2.3:a:tortall:yasm:1.3.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-33461
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 21 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-33461
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2021-33461
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-33461
-
https://github.com/yasm/yasm/issues/161
AddressSanitizer: heap-use-after-free in yasm_intnum_destroy() libyasm/intnum.c:415 · Issue #161 · yasm/yasm · GitHubExploit;Issue Tracking;Third Party Advisory
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https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d
Minimum information for the vulnerability covered by 32 CVEs. · GitHubThird Party Advisory
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