Buffer overflow in Pypi Bsdiff4
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (62.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/ilanschnell/bsdiff4/commit/49a4cee2feef7deaf9d89e5e793a8824930284d7 (Patch, Third Party Advisory)
- github.com/ilanschnell/bsdiff4/blob/master/CHANGELOG.txt (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2020-15904?
- CVE-2020-15904 is a high-severity vulnerability in Pypi Bsdiff4, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-07-22.
- How severe is CVE-2020-15904?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-15904 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.