Out-of-bounds Read in Rpm
CVE-2021-20266
A flaw was found in RPM's hdrblobInit() in lib/header.c. This flaw allows an attacker who can modify the rpmdb to cause an out-of-bounds read. The highest threat from this vulnerability is to system availability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.017 (76.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Rpm
- Fedoraproject Fedora — versions 33, 34
- Rpm — versions rpm 4.17.0
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/…
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/…
- security.gentoo.org/glsa/202107-43 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20266?
- CVE-2021-20266 is a medium-severity vulnerability in Rpm, classified under Out-of-bounds Read. CVSS score: 4.9/10. Published 2021-04-30.
- How severe is CVE-2021-20266?
- Medium severity. CVSS v3 base score is 4.9 out of 10.