CVE-2009-0265

Publication date 26 January 2009

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Internet Systems Consortium (ISC) BIND 9.6.0 and earlier does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077 and CVE-2009-0025.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
bind9	8.10 intrepid	Not affected
	8.04 LTS hardy	Not affected
	7.10 gutsy	Not affected
	6.06 LTS dapper	Not affected

Notes

jdstrand

Only affects Bind 9.6.0. 9.5 and earlier does not have EVP_VerifyFinal().

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	None
Availability impact	None

Scores

Parameter	Value
Base score	7.5 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Other references

https://www.cve.org/CVERecord?id=CVE-2009-0265