Vulnerability Details : CVE-2022-31796
libjpeg 1.63 has a heap-based buffer over-read in HierarchicalBitmapRequester::FetchRegion in hierarchicalbitmaprequester.cpp because the MCU size can be different between allocation and use.
Products affected by CVE-2022-31796
- cpe:2.3:a:jpeg:libjpeg:1.63:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-31796
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 38 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-31796
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-2022-31796
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2022-31796
-
https://github.com/thorfdbg/libjpeg/issues/71
heap-overflow in HierarchicalBitmapRequester::FetchRegion · Issue #71 · thorfdbg/libjpeg · GitHubThird Party Advisory
-
https://github.com/thorfdbg/libjpeg/commit/187035b9726710b4fe11d565c7808975c930895d
The code now checks for consistency of the MCU sizes across · thorfdbg/libjpeg@187035b · GitHubPatch;Third Party Advisory
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