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[ GLSA 200903-14 ] BIND: Incorrect signature verification
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PostPosted: Mon Mar 09, 2009 5:26 pm    Post subject: [ GLSA 200903-14 ] BIND: Incorrect signature verification Reply with quote

Gentoo Linux Security Advisory

Title: BIND: Incorrect signature verification (GLSA 200903-14)
Severity: normal
Exploitable: remote
Date: March 09, 2009
Bug(s): #254134, #257949
ID: 200903-14

Synopsis

Incomplete verification of RSA and DSA certificates might lead to spoofed records authenticated using DNSSEC.

Background

ISC BIND is the Internet Systems Consortium implementation of the Domain Name System (DNS) protocol.

Affected Packages

Package: net-dns/bind
Vulnerable: < 9.4.3_p1
Unaffected: >= 9.4.3_p1
Architectures: All supported architectures


Description

BIND does not properly check the return value from the OpenSSL functions to verify DSA (CVE-2009-0025) and RSA (CVE-2009-0265) certificates.

Impact

A remote attacker could bypass validation of the certificate chain to spoof DNSSEC-authenticated records.

Workaround

There is no known workaround at this time.

Resolution

All BIND users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/bind-9.4.3_p1"


References

CVE-2009-0025
CVE-2009-0265
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