High severity7.8NVD Advisory· Published Jan 29, 2020· Updated Jun 17, 2026
CVE-2019-18634
CVE-2019-18634
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
34<1.8.26+ 1 more
- (no CPE)range: <1.8.26
- cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*range: >=1.7.1,<1.8.26
- Sudo/Sudodescription
- osv-coords28 versionspkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/sudo&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/sudo&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/sudo&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/sudo&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/sudo&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/sudo&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/opensuse/sudo&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/sudo&distro=openSUSE%20Tumbleweed
< 1.8.10p3-2.32.1+ 27 more
- (no CPE)range: < 1.8.10p3-2.32.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.10p3-10.26.1
- (no CPE)range: < 1.8.22-4.9.1
- (no CPE)range: < 1.8.22-4.9.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.10p3-10.26.1
- (no CPE)range: < 1.8.27-4.3.1
- (no CPE)range: < 1.8.27-4.3.1
- (no CPE)range: < 1.8.10p3-2.32.1
- (no CPE)range: < 1.8.22-4.9.1
- (no CPE)range: < 1.8.22-4.9.1
- (no CPE)range: < 1.8.22-4.9.1
- (no CPE)range: < 1.8.10p3-10.26.1
- (no CPE)range: < 1.8.22-4.9.1
- (no CPE)range: < 1.8.27-4.3.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.20p2-3.17.1
- (no CPE)range: < 1.8.10p3-10.26.1
- (no CPE)range: < 1.8.22-lp151.5.6.1
- (no CPE)range: < 1.9.7p2-1.4
Patches
Vulnerability mechanics
References
26- www.openwall.com/lists/oss-security/2020/02/05/5nvdExploitThird Party Advisory
- www.sudo.ws/alerts/pwfeedback.htmlnvdExploitVendor Advisory
- packetstormsecurity.com/files/156174/Slackware-Security-Advisory-sudo-Updates.htmlnvdThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/156189/Sudo-1.8.25p-Buffer-Overflow.htmlnvdThird Party AdvisoryVDB Entry
- seclists.org/fulldisclosure/2020/Jan/40nvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2020/01/30/6nvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2020/01/31/1nvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2020/02/05/2nvdThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/02/msg00002.htmlnvdMailing ListThird Party Advisory
- seclists.org/bugtraq/2020/Feb/2nvdMailing ListThird Party Advisory
- seclists.org/bugtraq/2020/Feb/3nvdMailing ListThird Party Advisory
- seclists.org/bugtraq/2020/Jan/44nvdMailing ListThird Party Advisory
- support.apple.com/kb/HT210919nvdThird Party Advisory
- www.debian.org/security/2020/dsa-4614nvdThird Party Advisory
- www.sudo.ws/security.htmlnvdVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-02/msg00029.htmlnvd
- access.redhat.com/errata/RHSA-2020:0487nvd
- access.redhat.com/errata/RHSA-2020:0509nvd
- access.redhat.com/errata/RHSA-2020:0540nvd
- access.redhat.com/errata/RHSA-2020:0726nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I6TKF36KOQUVJNBHSVJFA7BU3CCEYD2F/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IY6DZ7WMDKU4ZDML6MJLDAPG42B5WVUC/nvd
- security.gentoo.org/glsa/202003-12nvd
- security.netapp.com/advisory/ntap-20200210-0001/nvd
- usn.ubuntu.com/4263-1/nvd
- usn.ubuntu.com/4263-2/nvd
News mentions
0No linked articles in our index yet.