CVE-2019-18634
At a glance
- Severity
- Not available
- EPSS
- EPSS 19.28 % · percentile 97 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mitre
- NVD status
- Modified
Description
In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2019-8357
- GCVE · GCVE-0-2019-18634
CERT-FR advisories
- CERTFR-2023-AVI-0504 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2022-AVI-267 — Multiples vulnérabilités dans Juniper Networks Junos Space · cert.ssi.gouv.fr
- CERTFR-2020-AVI-063 — Multiples vulnérabilités dans les produits Apple · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*≥ 1.7.1 < 1.8.26cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| affected n/a |
References
- https://support.apple.com/kb/HT210919
- https://seclists.org/bugtraq/2020/Jan/44
- https://www.sudo.ws/security.html
- https://www.sudo.ws/alerts/pwfeedback.html
- http://www.openwall.com/lists/oss-security/2020/01/30/6
- http://www.openwall.com/lists/oss-security/2020/01/31/1
- http://seclists.org/fulldisclosure/2020/Jan/40
- https://www.debian.org/security/2020/dsa-4614
- https://lists.debian.org/debian-lts-announce/2020/02/msg00002.html
- https://seclists.org/bugtraq/2020/Feb/3
- https://seclists.org/bugtraq/2020/Feb/2
- http://packetstormsecurity.com/files/156174/Slackware-Security-Advisory-sudo-Updates.html
- http://packetstormsecurity.com/files/156189/Sudo-1.8.25p-Buffer-Overflow.html
- http://www.openwall.com/lists/oss-security/2020/02/05/2
- http://www.openwall.com/lists/oss-security/2020/02/05/5
- https://usn.ubuntu.com/4263-1/
- https://security.netapp.com/advisory/ntap-20200210-0001/
- https://usn.ubuntu.com/4263-2/
- https://access.redhat.com/errata/RHSA-2020:0487
- https://access.redhat.com/errata/RHSA-2020:0509
- https://access.redhat.com/errata/RHSA-2020:0540
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00029.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IY6DZ7WMDKU4ZDML6MJLDAPG42B5WVUC/
- https://access.redhat.com/errata/RHSA-2020:0726
- https://security.gentoo.org/glsa/202003-12
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I6TKF36KOQUVJNBHSVJFA7BU3CCEYD2F/
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |