Local authentication bypass in sudo
Published Jun 11, 2007
7.2
HIGHCVSS 2.0
EPSS 0.36%
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."
Affected products
No data.
- n/a
- 1.6.8_p12
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. Versions of sudo package shipped with Red Hat Enterprise Linux versions 2.1, 3, 4 and 5 are linked with PAM support and never use libkrb5 authentication.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.36% (0.00363) | 27.77th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00363) | 27.94th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00047) | 11.75th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.06% (0.00060) | 27.52th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.03% (0.01034) | 41.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.03% (0.01034) | 39.91th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.03% (0.01034) | 37.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.03% (0.01034) | 20.32th | v2 (v2022.01.01) |
No CWE recorded.
References (10)
- http://secunia.com/advisories/26540 third-party-advisoryx_refsource_SECUNIA
- http://www.securityfocus.com/archive/1/470739/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/470752/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/470774/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/24368 vdb-entryx_refsource_BID
- http://www.sudo.ws/cgi-bin/cvsweb/sudo/auth/kerb5.c x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2007-3149 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=243702 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2007-3149
- https://www.cve.org/CVERecord?id=CVE-2007-3149
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/26540 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.securityfocus.com/archive/1/470739/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/archive/1/470752/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/archive/1/470774/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/24368 | vdb-entryx_refsource_BID | |
| http://www.sudo.ws/cgi-bin/cvsweb/sudo/auth/kerb5.c | x_refsource_CONFIRM | |
| https://access.redhat.com/security/cve/CVE-2007-3149 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=243702 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2007-3149 | ||
| https://www.cve.org/CVERecord?id=CVE-2007-3149 |
Change history (0)
No recorded changes yet.