CVE-2017-11423

The cabd_read_string function in mspack/cabd.c in libmspack 0.5alpha, as used in ClamAV 0.99.2 and other products, allows remote attackers to cause a denial of service (stack-based buffer over-read and application crash) via a crafted CAB file.

Published: 2017-07-18 Last update: 2026-05-13 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-11423 is rated Moderate Risk (48.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.07%). Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2017-11423

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 2026-06-15 3.10% 2.07% -1.03%
2 2026-06-12 2.81% 3.10% +0.29%
3 2026-04-18 — 2.81% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-11423

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.0 MEDIUM
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/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:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2017-11423

OS Trackers for CVE-2017-11423

vendor priority summary link
alpine — CVE-2017-11423: 2 source package rows (clamav, libmspack); 19 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 19, open 0. https://security.alpinelinux.org/vuln/CVE-2017-11423
debian unimportant CVE-2017-11423 unimportant priority: Debian including 2 source packages (clamav, libmspack), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. https://security-tracker.debian.org/tracker/CVE-2017-11423
gentoo normal CVE-2017-11423: 1 GLSA(s) (201804-16), 1 atom(s) (app-antivirus/clamav); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-11423
redhat medium — https://access.redhat.com/security/cve/CVE-2017-11423
suse medium CVE-2017-11423 severity moderate: SUSE including 81 source package names (clamav, clamav-0.100.0-1.17, …), 173 product×package rows across 58 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (58 product lines)): Fixed 105, Known Not Affected 68. https://www.suse.com/security/cve/CVE-2017-11423/
ubuntu medium CVE-2017-11423 medium priority: Ubuntu including 2 source packages (clamav, libmspack), 33 status rows across 17 suites (artful, bionic, cosmic, disco, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, trusty, upstream, xenial, yakkety, zesty): not-affected 27, released 4, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2017-11423

Affected software / configurations for CVE-2017-11423

Vendor Product Version Raw CPE
libmspack_project libmspack 0.5 cpe:2.3:a:libmspack_project:libmspack:0.5:alpha:*:*:*:*:*:*

References for CVE-2017-11423

cvelogic Threat Intelligence