CVE search · CVE-2019-18684
CVE-2019-18684
high 7.0
Sudo through 1.8.29 allows local users to escalate to root if they have write access to file descriptor 3 of the sudo process. This occurs because of a race condition between determining a uid, and the setresuid and openat system calls. The attacker can write "ALL ALL=(ALL) NOPASSWD:ALL" to /proc/#####/fd/3 at a time when Sudo is prompting for a password. NOTE: This has been disputed due to the way Linux /proc works. It has been argued that writing to /proc/#####/fd/3 would only be viable if you had permission to write to /etc/sudoers. Even with write permission to /proc/#####/fd/3, it would not help you write to /etc/sudoers
Details
- Status
- Modified disputed
- Published
- Last changed
- Source
- cve@mitre.org
- Weakness
- CWE-362
Severity
| Version | Score | Vector | Source |
|---|---|---|---|
| CVSS 3.1 | high 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
nvd@nist.govPrimary |
| CVSS 2.0 | medium 6.9 | AV:L/AC:M/Au:N/C:C/I:C/A:C |
nvd@nist.govPrimary |
Affected products
Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.
- sudo_project · sudo
References
- https://gist.github.com/oxagast/51171aa161074188a11d96cbef884bbdExploitThird Party Advisory
- https://gist.github.com/oxagast/51171aa161074188a11d96cbef884bbdExploitThird Party Advisory