CVE-2022-41916
Versions prior to 7.7.1 are vulnerable to a denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.93%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Heimdal is an implementation of ASN.1/DER, PKIX, and Kerberos. Versions prior to 7.7.1 are vulnerable to a denial of service vulnerability in Heimdal's PKI certificate validation library, affecting the KDC (via PKINIT) and kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509. Users should upgrade to Heimdal 7.7.1 or 7.8. There are no known workarounds for this issue.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.93% probability · 59th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-193
- Affected
- heimdal project/heimdal · debian/debian linux
- Source
- security-advisories@github.com
References
- https://github.com/heimdal/heimdal/security/advisories/GHSA-mgqr-gvh6-23cxThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00034.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202310-06
- https://security.netapp.com/advisory/ntap-20230216-0008/
- https://www.debian.org/security/2022/dsa-5287Third Party Advisory
- https://github.com/heimdal/heimdal/security/advisories/GHSA-mgqr-gvh6-23cxThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00034.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202310-06
- https://security.netapp.com/advisory/ntap-20230216-0008/
- https://www.debian.org/security/2022/dsa-5287Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.