Buffer overflow in the spa_base64_to_bits function in Exim before 4.43, as originally obtained from Samba code, and as called by the…

Description

Buffer overflow in the spa_base64_to_bits function in Exim before 4.43, as originally obtained from Samba code, and as called by the auth_spa_client function, may allow attackers to execute arbitrary code during SPA authentication.

Scores

EPSS (exploitation in 30 days)

0.72% · top 46% of all CVEs (3 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.6.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (8)

• oval:org.mitre.oval:def:11293 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
• http://ftp6.us.freebsd.org/pub/mail/exim/ChangeLogs/ChangeLog-4.44 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20050212 exim auth_spa_server() PoC exploit (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 12188 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• RHSA-2005:025 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• 20050107 Exim auth_spa_server() Buffer Overflow Vulnerability (opens in a new tab)third-party-advisoryx_refsource_IDEFENSEx_transferred
• GLSA-200501-23 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• [exim] 20050104 2 smallish security issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2005-0022](https://trackcve.app/badge/CVE-2005-0022.svg)](https://trackcve.app/cve/CVE-2005-0022)

Record last updated 7 Aug 2024, 20:57 UTC.