Vulnerability Details : CVE-2019-11471
Potential exploit
libheif 1.4.0 has a use-after-free in heif::HeifContext::Image::set_alpha_channel in heif_context.h because heif_context.cc mishandles references to non-existing alpha images.
Vulnerability category: Memory Corruption
Products affected by CVE-2019-11471
- cpe:2.3:a:struktur:libheif:1.4.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-11471
0.32%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-11471
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
8.8
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2019-11471
-
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by: nvd@nist.gov (Primary)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-2019-11471
-
https://github.com/strukturag/libheif/commit/995a4283d8ed2d0d2c1ceb1a577b993df2f0e014
Detect non-existing referenced alpha images (fixes #123) · strukturag/libheif@995a428 · GitHubPatch;Third Party Advisory
-
https://github.com/strukturag/libheif/issues/123
AddressSanitizer: heap-use-after-free at heif_context.h:117 · Issue #123 · strukturag/libheif · GitHubExploit;Patch;Third Party Advisory
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