CVE-2023-42465

Exp

Sudo before 1.9.15 might allow row hammer attacks (for authentication bypass or privilege escalation) because application logic sometimes is based on not equaling an error value (instead of equaling a success value), and because the values do not resist flips of a single bit.

Published: 2023-12-22 Last update: 2025-11-04 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-42465 is rated Exploit Available (50/100): CVSS High severity, with low exploitation likelihood (EPSS 0.00%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-42465

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-42465

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.08% 0.00% -0.08%
2 2025-11-18 0.00% 0.08% +0.08%
3 2025-04-15 — 0.00% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-42465

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.0 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.0 5.9 [email protected]

Weakness enumeration for CVE-2023-42465

OS Trackers for CVE-2023-42465

vendor priority summary link
alpine — CVE-2023-42465: 1 source package rows (sudo); 18 state rows across 3 repos (3.22-community, edge-community, edge-main); fixed 0, open 18. https://security.alpinelinux.org/vuln/CVE-2023-42465
debian unimportant CVE-2023-42465 unimportant priority: Debian including 1 source packages (sudo), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2023-42465
gentoo high CVE-2023-42465: 1 GLSA(s) (202401-29), 1 atom(s) (app-admin/sudo); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-42465
redhat medium — https://access.redhat.com/security/cve/CVE-2023-42465
suse high CVE-2023-42465 severity important: SUSE including 286 source package names (12.1-2.2.553:sudo-1.9.5p2-150300.3.33.1, 12.1-6.2.375:sudo-1.9.5p2-150300.3.33.1, …), 504 product×package rows across 220 product lines (Container suse/sle-micro-rancher/5.2, Container suse/sle-micro-rancher/5.3, … (220 product lines)): Fixed 309, Known Affected 195. https://www.suse.com/security/cve/CVE-2023-42465/
ubuntu medium CVE-2023-42465 medium priority: Ubuntu including 1 source packages (sudo), 8 status rows across 8 suites (bionic, focal, jammy, lunar, mantic, trusty, upstream, xenial): not-affected 7, released 1. https://ubuntu.com/security/CVE-2023-42465

Affected software / configurations for CVE-2023-42465

Vendor Product Version Raw CPE
sudo_project sudo < 1.9.15 cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*

References for CVE-2023-42465

URL Tags
https://arxiv.org/abs/2309.02545 Technical Description Third Party Advisory
https://github.com/sudo-project/sudo/commit/7873f8334c8d31031f8cfa83bd97ac6029309e4f Patch
https://github.com/sudo-project/sudo/releases/tag/SUDO_1_9_15 Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R4Q23NHCKCLFIHSNY6KJ27GM7FSCEVXM/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U6XMRUJCPII4MPWG43HTYR76DGLEYEFZ/
https://security.gentoo.org/glsa/202401-29
https://security.netapp.com/advisory/ntap-20240208-0002/
https://www.openwall.com/lists/oss-security/2023/12/21/9 Exploit Mailing List
https://www.sudo.ws/releases/changelog/ Release Notes
http://www.openwall.com/lists/oss-security/2025/09/23/2
http://www.openwall.com/lists/oss-security/2025/09/24/6
https://lists.fedoraproject.org/archives/list/[email protected]/message/R4Q23NHCKCLFIHSNY6KJ27GM7FSCEVXM/
https://lists.fedoraproject.org/archives/list/[email protected]/message/U6XMRUJCPII4MPWG43HTYR76DGLEYEFZ/
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