sudo, when linked with MIT Kerberos 5 (krb5), does not properly check whether a user can currently authenticate to Kerberos, which allows…

Description

sudo, when linked with MIT Kerberos 5 (krb5), does not properly check whether a user can currently authenticate to Kerberos, which allows local users to gain privileges, in a manner unintended by the sudo security model, via certain KRB5_ environment variable settings. NOTE: another researcher disputes this vulnerability, stating that the attacker must be "a user, who can already log into your system, and can already use sudo."

Scores

EPSS (exploitation in 30 days)

0.36% · top 70% of all CVEs (2 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (6)

• 24368 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://www.sudo.ws/cgi-bin/cvsweb/sudo/auth/kerb5.c (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20070607 MIT krb5: makes sudo authentication issue MUCH worse. (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 20070607 Sudo: local root compromise with krb5 enabled (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 26540 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• 20070607 Re: Sudo: local root compromise with krb5 enabled (opens in a new tab)mailing-listx_refsource_BUGTRAQx_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)

Record last updated 7 Aug 2024, 14:05 UTC.