Improper Input Validation Affecting apng2gif package, versions <1.8-0.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published17 Mar 2017
- disclosed17 Mar 2017
Introduced: 17 Mar 2017
CVE-2017-6961 (opens in a new tab)How to fix?
Upgrade Ubuntu:21.10 apng2gif to version 1.8-0.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream apng2gif package and not the apng2gif package as distributed by Ubuntu.
See How to fix? for Ubuntu:21.10 relevant fixed versions and status.
An issue was discovered in apng2gif 1.7. There is improper sanitization of user input causing huge memory allocations, resulting in a crash. This is related to the read_chunk function using the pChunk->size value (within the PNG file) to determine the amount of memory to allocate.