Vulnerability Details : CVE-2021-3622
Potential exploit
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.
Products affected by CVE-2021-3622
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:hivex:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3622
0.19%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 56 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3622
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
2.8
|
1.4
|
NIST |
CWE ids for CVE-2021-3622
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: secalert@redhat.com (Primary)
References for CVE-2021-3622
-
https://listman.redhat.com/archives/libguestfs/2021-August/msg00002.html
[Libguestfs] [PATCH hivex] lib/node.c: Limit recursion in ri-records (CVMailing List;Patch;Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/USD4OEV6L3RPHE32V2MJ4JPFBODINWSU/
[SECURITY] Fedora 34 Update: hivex-1.3.21-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1975489
1975489 – (CVE-2021-3622) CVE-2021-3622 hivex: stack overflow due to recursive call of _get_children()Exploit;Issue Tracking;Patch;Vendor Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S35TVTAPHORSUIFYNFBHKLQRPVFUPXBE/
[SECURITY] Fedora 33 Update: hivex-1.3.21-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://github.com/libguestfs/hivex/commit/771728218dac2fbf6997a7e53225e75a4c6b7255
lib/node.c: Limit recursion in ri-records (CVE-2021-3622) · libguestfs/hivex@7717282 · GitHubPatch;Third Party Advisory
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