PyPI: bsdiff4
CVE-2020-15904
Safety vulnerability ID: SFTY-20200722-06972
Safety legacy ID: pyup.io-42280
Bsdiff4 1.2.0 includes a fix for CVE-2020-15904: A buffer overflow in the patching routine of bsdiff4 before 1.2.0 allows an attacker to write to heap memory (beyond allocated bounds) via a crafted patch file.
Overview
bsdiff4 out-of-bounds write via patch file
Advisory
Bsdiff4 1.2.0 includes a fix for CVE-2020-15904: A buffer overflow in the patching routine of bsdiff4 before 1.2.0 allows an attacker to write to heap memory (beyond allocated bounds) via a crafted patch file.
How to Fix
Mitigation and Workarounds
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Vulnerable Functions
Functions linked to known vulnerabilities.
References
- https://getsafety.com/vulnerabilities/SFTY-20200722-06972/CVE-2020-15904
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-15904
- https://github.com/ilanschnell/bsdiff4/blob/master/CHANGELOG.txt
- https://github.com/ilanschnell/bsdiff4/commit/49a4cee2feef7deaf9d89e5e793a8824930284d7
- https://nvd.nist.gov/vuln/detail/CVE-2020-15904
- https://github.com/ilanschnell/bsdiff4/commit/49a4cee2feef7deaf9d89e5e793a8824930284d7
- https://github.com/ilanschnell/bsdiff4/blob/9a84c2ee01f5ba0742d18c9f3b3d5244ae7fb302/CHANGELOG.txt#L30-L31
- https://github.com/ilanschnell/bsdiff4/blob/master/CHANGELOG.txt
- https://github.com/pypa/advisory-database/tree/main/vulns/bsdiff4/PYSEC-2020-30.yaml
- https://github.com/advisories/GHSA-f8m3-jpxr-hm5x
Verified by Safety
Our Cybersecurity Intelligence Team reviewed this vulnerability. We combine public data with our own research to find issues not yet reported to public sources.
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