Vulnerability in Isc Bind9
CVE-2022-38177
By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.
EPSS: 0.012 (79.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Isc Bind9 — versions Open Source Branches 9.8 through 9.16 9.8.4 through versions before 9.16.33, Supported Preview Branches 9.9-S through 9.11-S 9.9.4-S1 through versions up to and including 9.11.37-S1, Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.33-S1
Public proof-of-concept exploits
References
- kb.isc.org/docs/cve-2022-38177
- [oss-security] 20220921 ISC has disclosed six vulnerabilities in BIND (CVE-2022-2795, CVE-2022-2881, CVE-2022-2906, CVE-2022-3080, CVE-2022-38177, CVE-2022-38178) (mailing-list)
- DSA-5235 (vendor-advisory)
- FEDORA-2022-ef038365de (vendor-advisory)
- FEDORA-2022-8268735e06 (vendor-advisory)
- FEDORA-2022-b197d64471 (vendor-advisory)
- [debian-lts-announce] 20221005 [SECURITY] [DLA 3138-1] bind9 security update (mailing-list)
- GLSA-202210-25 (vendor-advisory)
- security.netapp.com/advisory/ntap-20221228-0010/
Frequently asked questions
- What is CVE-2022-38177?
- CVE-2022-38177 is a high-severity vulnerability in Isc Bind9. CVSS score: 7.5/10. Published 2022-09-21.
- How severe is CVE-2022-38177?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-38177 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.