SB2018112222 - Type confusion in ghostscript (Alpine package)
Published: November 22, 2018
Security Bulletin ID
SB2018112222
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Type confusion (CVE-ID: CVE-2018-19477)
CWE-ID: CWE-843 - Type confusion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to bypass security restrictions on the target system.
The vulnerability exists due to a JBIG2Decode type confusion condition in the psi/zfjbig2.csource code file. A remote unauthenticated attacker can trick the victim into accessing a PostScript file that submits malicious input to bypass the security access restrictions on the targeted system, which could be used to conduct further attacks.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=b0243d03648d68851d3b5edb68da29eaae5c9f0f
- https://git.alpinelinux.org/aports/commit/?id=b38a11ee1f5109ffc2f67afa52903b9437dd4111
- https://git.alpinelinux.org/aports/commit/?id=1effb87543c10d5de5e0a181c6757a0d5cf9e599
- https://git.alpinelinux.org/aports/commit/?id=90f284afbeec1f422dc08dc966719005e5def79a
- https://git.alpinelinux.org/aports/commit/?id=e558a52ec2ce576ebfe50d2acaee3449d1ef6c26