CVSS 3.1
7.8 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HCVE-2020-15904
High (7.8) in pypi bsdiff4. EPSS 1.1% chance of exploitation in the next 30 days. Fixed in bsdiff4 1.2.0.
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.
Severity
- EPSS
- 1.1% chance of exploitation in the next 30 days; higher than 64% of CVEs (scores of 2026-10-31)
- CWE
- CWE-787
- Published
- Modified
- Record from
- the NVD, synced
Affected
- pypi:bsdiff4
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-f8m3-jpxr-hm5x | PyPI | bsdiff4 | <1.2.0 | 1.2.0 |
| PYSEC-2020-30 | PyPI | bsdiff4 | <1.2.0 | 1.2.0 |
References
- https://github.com/ilanschnell/bsdiff4/blob/master/CHANGELOG.txt
- https://github.com/ilanschnell/bsdiff4/commit/49a4cee2feef7deaf9d89e5e793a8824930284d7
- https://github.com/ilanschnell/bsdiff4/blob/master/CHANGELOG.txt
- https://github.com/ilanschnell/bsdiff4/commit/49a4cee2feef7deaf9d89e5e793a8824930284d7