Resource exhaustion in Fedoraproject Fedora
CVE-2021-3622
A flaw was found in the hivex library. This flaw allows an attacker to input a specially crafted Windows Registry (hive) file, which would cause hivex to recursively call the _get_children() function, leading to a stack overflow. The highest threat from this vulnerability is to system availability.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.048 (91.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.048 · newest: 0.048 · change: 0.000
Affected products
- Fedoraproject Fedora — versions 33, 34
- Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
- Red Hat Enterprise Linux Workstation — versions 7.0
- Red Hat Hivex
- Hivex — versions hivex-1.3.21
Weakness classification (CWE)
References
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Issue Tracking, Vendor Advisory)
- github.com/libguestfs/hivex/commit/771728218dac2fbf6997a7e53225e75a4c6b7255 (Patch, Third Party Advisory)
- listman.redhat.com/archives/libguestfs/2021-August/msg00002.html (Patch, Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3622?
- CVE-2021-3622 is a medium-severity vulnerability in Fedoraproject Fedora, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2021-12-23.
- How severe is CVE-2021-3622?
- Medium severity. CVSS v3 base score is 4.3 out of 10.