SB2017091111 - Buffer over-read in libarchive (Alpine package)
Published: September 11, 2017
Security Bulletin ID
SB2017091111
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer over-read (CVE-ID: CVE-2017-14166)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in libarchive 3.3.2. A remote attacker can trigger xml_data heap-based buffer over-read and application crash via a specially crafted xar archive, related to the mishandling of empty strings in the atol8 function in archive_read_support_format_xar.c.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=ae83d22df8a2e63e7eba06f17d3e61ba2ca50417
- https://git.alpinelinux.org/aports/commit/?id=3d9a3dc5dd0d1828bd2675f6596bd5a748acad9b
- https://git.alpinelinux.org/aports/commit/?id=ca47e9328bb9d0a21d18bea8e17a078e23d8fc6c
- https://git.alpinelinux.org/aports/commit/?id=6787a7e2434a85069463e3ce9ec04398c233d5c6
- https://git.alpinelinux.org/aports/commit/?id=4e867fa3400f81a4b542590c9c72e69b9f2bd20c
- https://git.alpinelinux.org/aports/commit/?id=d1f44c765ebc44a2b5f492fb4b964220ac2a4f6d
- https://git.alpinelinux.org/aports/commit/?id=3ca0b65388a3fb520000f35cd6ed4c28a784924d
- https://git.alpinelinux.org/aports/commit/?id=72ae86e2f55740905d51b67f5c46e71533da9051
- https://git.alpinelinux.org/aports/commit/?id=8738c897f2e62833c60f777eb9e55023e2ba32f6
- https://git.alpinelinux.org/aports/commit/?id=e6e4b0e153d790004c8771620a1a7c982411c813