SB2019062720 - Out-of-bounds write in bzip2 (Alpine package)
Published: June 27, 2019
Security Bulletin ID
SB2019062720
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2019-12900)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the BZ2_decompress() function in decompress.c. A remote attacker can create a specially crafted archive, trick the victim into opening it using the affected library, trigger out-of-bounds write and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=596cd15e692776222d49da2700c6041b39ffbea9
- https://git.alpinelinux.org/aports/commit/?id=263042b4f11c9dbc797bdf7eef8c0ebdda9efe4a
- https://git.alpinelinux.org/aports/commit/?id=48ec283be13e799c70aae6c045c2c93e39d262a0
- https://git.alpinelinux.org/aports/commit/?id=53b02f8b1597aabb4ec836bb5aa421e0d1f95189
- https://git.alpinelinux.org/aports/commit/?id=d8ead9ace841cece4ee4f90c91900ea12aecb759
- https://git.alpinelinux.org/aports/commit/?id=f47a9e1da5b7f33cf5d46c0541deb454729eee51