Mageia 2021-0220: bind security update
Summary
A broken inbound incremental zone update (IXFR) can cause named to terminate unexpectedly(CVE-2021-25214). Mageia 7 version not affected.
An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself (CVE-2021-25215). This affects both versions.
A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack (CVE-2021-25216). Mageia 7 version not affected.
References
- https://bugs.mageia.org/show_bug.cgi?id=28873
- https://access.redhat.com/errata/RHSA-2021:1469
- https://kb.isc.org/v1/docs/cve-2021-25214
- https://kb.isc.org/v1/docs/cve-2021-25215
- https://kb.isc.org/v1/docs/cve-2021-25216
- https://www.openwall.com/lists/oss-security/2021/04/29/1
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25214
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25215
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25216
Resolution
MGASA-2021-0220 - Updated bind packages fix security vulnerabilities
SRPMS
- 7/core/bind-9.11.6-1.4.mga7
- 8/core/bind-9.11.31-1.1.mga8