Medium severity · published Oct 23, 2018
CVE-2018-18584
In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte too small for the maximal Quantum block, leading to an out-of-bounds…
6.5
CVSS
2.7%
EPSS
No
On KEV
Description
In mspack/cab.h in libmspack before 0.8alpha and cabextract before 1.8, the CAB block input buffer is one byte too small for the maximal Quantum block, leading to an out-of-bounds write.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
Cabextract · Cabextract Project
before 1.8 · source: NVD
DL
Debian Linux · Debian
8.0 · source: NVD
EL
Enterprise Linux · Redhat
7.0 · source: NVD
LI
Libmspack · Libmspack Project
0.3; 0.4; 0.5; 0.6; 0.7; 0.7.1 · source: NVD
LE
Linux Enterprise Server · Suse
11; 12; 12; 12 · source: NVD
SV
Starwind Virtual San · Starwindsoftware
All versions, or not specified · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04; 16.04; 18.04; 18.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-18584
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-18584
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2049
Mailing List
https://bugs.debian.org/911640
Patch
https://github.com/kyz/libmspack/commit/40ef1b4093d77ad3a5cfcee1f5cb6108b3a3bcc2
Mailing List
https://lists.debian.org/debian-lts-announce/2018/10/msg00017.html
Third Party Advisory
https://security.gentoo.org/glsa/201903-20
Third Party Advisory
https://usn.ubuntu.com/3814-1/
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