CVE-2022-3437
CVE-2022-3437 Vulnerability Analysis & Exploit Intelligence
A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.
Published Updated Sources: cvelistV5, redhat
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.
Exploitation
Unreported
no source claims exploitation
EPSS
4%
chance of exploitation in 30 days
CVSS base
4.3
MEDIUM
CISA SSVC assessment
Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.
Exploitation
None
none · proof-of-concept · active
Automatable
No
can an attacker script all four kill-chain steps
Technical impact
Partial
partial · total control of the vulnerable component
Affected scope
The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.
Vendors (1)
Products (1)
Every base score collected
Sources score independently and disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Source |
|---|---|---|---|---|---|
| 4.3 | CVSS 3.1 | MEDIUM | — | — | cvelistV5 |
Weakness & attack patterns
- CWE-122
References
8 on the record
- bugzilla.redhat.com/show_bug.cgi?id=2137774
reference
- www.samba.org/samba/security/CVE-2022-3437.html
reference
- access.redhat.com/security/cve/CVE-2022-3437
reference
- www.openwall.com/lists/oss-security/2023/02/08/1
mailing-list
- security.netapp.com/advisory/ntap-20230216-0008/
reference
- security.gentoo.org/glsa/202309-06
vendor-advisory
- security.gentoo.org/glsa/202310-06
vendor-advisory
- lists.debian.org/debian-lts-announce/2024/04/msg00015.html
mailing-list
Elsewhere on this site
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.