CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
96.9%
Issue Overview:
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.(CVE-2018-18584)
chmd_read_headers in mspack/chmd.c in libmspack before 0.8alpha accepts a filename that has ‘\\0’ as its first or second character (such as the “/\\0” name).(CVE-2018-18585)
Affected Packages:
libmspack
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update libmspack to update your system.
New Packages:
aarch64:
libmspack-0.5-0.7.alpha.amzn2.aarch64
libmspack-devel-0.5-0.7.alpha.amzn2.aarch64
libmspack-debuginfo-0.5-0.7.alpha.amzn2.aarch64
i686:
libmspack-0.5-0.7.alpha.amzn2.i686
libmspack-devel-0.5-0.7.alpha.amzn2.i686
libmspack-debuginfo-0.5-0.7.alpha.amzn2.i686
src:
libmspack-0.5-0.7.alpha.amzn2.src
x86_64:
libmspack-0.5-0.7.alpha.amzn2.x86_64
libmspack-devel-0.5-0.7.alpha.amzn2.x86_64
libmspack-debuginfo-0.5-0.7.alpha.amzn2.x86_64
Red Hat: CVE-2018-18584, CVE-2018-18585
Mitre: CVE-2018-18584, CVE-2018-18585
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 2 | aarch64 | libmspack | < 0.5-0.7.alpha.amzn2 | libmspack-0.5-0.7.alpha.amzn2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | libmspack-devel | < 0.5-0.7.alpha.amzn2 | libmspack-devel-0.5-0.7.alpha.amzn2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | libmspack-debuginfo | < 0.5-0.7.alpha.amzn2 | libmspack-debuginfo-0.5-0.7.alpha.amzn2.aarch64.rpm |
Amazon Linux | 2 | i686 | libmspack | < 0.5-0.7.alpha.amzn2 | libmspack-0.5-0.7.alpha.amzn2.i686.rpm |
Amazon Linux | 2 | i686 | libmspack-devel | < 0.5-0.7.alpha.amzn2 | libmspack-devel-0.5-0.7.alpha.amzn2.i686.rpm |
Amazon Linux | 2 | i686 | libmspack-debuginfo | < 0.5-0.7.alpha.amzn2 | libmspack-debuginfo-0.5-0.7.alpha.amzn2.i686.rpm |
Amazon Linux | 2 | x86_64 | libmspack | < 0.5-0.7.alpha.amzn2 | libmspack-0.5-0.7.alpha.amzn2.x86_64.rpm |
Amazon Linux | 2 | x86_64 | libmspack-devel | < 0.5-0.7.alpha.amzn2 | libmspack-devel-0.5-0.7.alpha.amzn2.x86_64.rpm |
Amazon Linux | 2 | x86_64 | libmspack-debuginfo | < 0.5-0.7.alpha.amzn2 | libmspack-debuginfo-0.5-0.7.alpha.amzn2.x86_64.rpm |
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
96.9%