CVE-2020-15904
bsdiff4 out-of-bounds write via patch file
7.8
HIGH
CVSS 3.1
EPSS 0.37%
Description
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 CVE-2020-15904
To remediate CVE-2020-15904, upgrade the affected package to a fixed version below.
- PyPI/bsdiff4—upgrade to 1.2.0 or later
- —upgrade to 49a4cee2feef7deaf9d89e5e793a8824930284d7 or later
Is CVE-2020-15904 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.2.0
- from 0, < 49a4cee2feef7deaf9d89e5e793a8824930284d7 | from 0, < 1.2.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |