CVE-2019-18634

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

19.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 97.1% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2020-01-29 17:23Z6 YR AGO

Last updated

2024-08-05 01:54Z2 YR AGO

Reserved

2019-10-30

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-787Out-of-bounds WriteBase
• CWE-121Stack-based Buffer OverflowVariant

Data version

5.1

Document digest

f1488c89fc803d0c39c797401a0422ef520f2a3accc48418e1327dd51455c20c

• support.apple.comhttps://support.apple.com/kb/HT210919x_refsource_CONFIRM
• seclists.org20200129 APPLE-SA-2020-1-28-2 macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierrahttps://seclists.org/bugtraq/2020/Jan/44mailing-listx_refsource_BUGTRAQ
• www.sudo.wshttps://www.sudo.ws/security.htmlx_refsource_MISC
• www.sudo.wshttps://www.sudo.ws/alerts/pwfeedback.htmlx_refsource_CONFIRM
• www.openwall.com[oss-security] 20200130 CVE-2019-18634: buffer overflow in sudo when pwfeedback is enabledhttp://www.openwall.com/lists/oss-security/2020/01/30/6mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20200131 Re: CVE-2019-18634: buffer overflow in sudo when pwfeedback is enabledhttp://www.openwall.com/lists/oss-security/2020/01/31/1mailing-listx_refsource_MLIST
• seclists.org20200131 APPLE-SA-2020-1-28-2 macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierrahttp://seclists.org/fulldisclosure/2020/Jan/40mailing-listx_refsource_FULLDISC
• www.debian.orgDSA-4614https://www.debian.org/security/2020/dsa-4614vendor-advisoryx_refsource_DEBIAN
• lists.debian.org[debian-lts-announce] 20200201 [SECURITY] [DLA 2094-1] sudo security updatehttps://lists.debian.org/debian-lts-announce/2020/02/msg00002.htmlmailing-listx_refsource_MLIST
• seclists.org20200203 [slackware-security] sudo (SSA:2020-031-01)https://seclists.org/bugtraq/2020/Feb/3mailing-listx_refsource_BUGTRAQ
• seclists.org20200203 [SECURITY] [DSA 4614-1] sudo security updatehttps://seclists.org/bugtraq/2020/Feb/2mailing-listx_refsource_BUGTRAQ
• packetstormsecurity.comhttp://packetstormsecurity.com/files/156174/Slackware-Security-Advisory-sudo-Updates.htmlx_refsource_MISC
• packetstormsecurity.comhttp://packetstormsecurity.com/files/156189/Sudo-1.8.25p-Buffer-Overflow.htmlx_refsource_MISC
• www.openwall.com[oss-security] 20200205 Re: CVE-2019-18634: buffer overflow in sudo when pwfeedback is enabledhttp://www.openwall.com/lists/oss-security/2020/02/05/2mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20200205 Re: CVE-2019-18634: buffer overflow in sudo when pwfeedback is enabledhttp://www.openwall.com/lists/oss-security/2020/02/05/5mailing-listx_refsource_MLIST
• usn.ubuntu.comUSN-4263-1https://usn.ubuntu.com/4263-1/vendor-advisoryx_refsource_UBUNTU
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20200210-0001/x_refsource_CONFIRM
• usn.ubuntu.comUSN-4263-2https://usn.ubuntu.com/4263-2/vendor-advisoryx_refsource_UBUNTU
• access.redhat.comRHSA-2020:0487https://access.redhat.com/errata/RHSA-2020:0487vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2020:0509https://access.redhat.com/errata/RHSA-2020:0509vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2020:0540https://access.redhat.com/errata/RHSA-2020:0540vendor-advisoryx_refsource_REDHAT
• lists.opensuse.orgopenSUSE-SU-2020:0244http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00029.htmlvendor-advisoryx_refsource_SUSE
• lists.fedoraproject.orgFEDORA-2020-8b563bc5f4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IY6DZ7WMDKU4ZDML6MJLDAPG42B5WVUC/vendor-advisoryx_refsource_FEDORA
• access.redhat.comRHSA-2020:0726https://access.redhat.com/errata/RHSA-2020:0726vendor-advisoryx_refsource_REDHAT
• security.gentoo.orgGLSA-202003-12https://security.gentoo.org/glsa/202003-12vendor-advisoryx_refsource_GENTOO
• lists.fedoraproject.orgFEDORA-2020-7c1b270959https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I6TKF36KOQUVJNBHSVJFA7BU3CCEYD2F/vendor-advisoryx_refsource_FEDORA