Vulnerability in Rpm
CVE-2021-35937
A race condition vulnerability was found in rpm. A local unprivileged user could use this flaw to bypass the checks that were introduced in response to CVE-2017-7500 and CVE-2017-7501, potentially gaining root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (22.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000
Affected products
- Rpm
- Fedoraproject Fedora — versions 34
- Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
- Rpm — versions Fixed in rpm v4.18.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- rpm.org/wiki/Releases/4.18.0 (Release Notes)
- bugzilla.redhat.com/show_bug.cgi (Patch, Issue Tracking, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2021-35937 (Vendor Advisory)
- www.usenix.org/legacy/event/sec05/tech/full_papers/borisov/borisov.pdf (Technical Description, Exploit, Third Party Advisory)
- security.gentoo.org/glsa/202210-22 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-35937?
- CVE-2021-35937 is a medium-severity vulnerability in Rpm, classified under Improper Link Resolution Before File Access. CVSS score: 6.4/10. Published 2022-08-25.
- How severe is CVE-2021-35937?
- Medium severity. CVSS v3 base score is 6.4 out of 10.
- Is CVE-2021-35937 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.