SB2019012214 - Security restrictions bypass in apache2 (Alpine package)
Published: January 22, 2019
Security Bulletin ID
SB2019012214
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 security vulnerability.
1) Security restrictions bypass (CVE-ID: CVE-2018-17199)
The vulnerability allows a remote attacker to bypass security restrictions on the target system.The weakness exists due to mod_session checks the session expiry time before decoding the session. A remote attacker сan cause session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded and reuse old session credentials or session IDs, which the attacker could use to access web pages previously accessed by a targeted user.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=9d23763439dabef4a81c7cc9c061b69048df9708
- https://git.alpinelinux.org/aports/commit/?id=1d9e0b6cf8ba241e0cc1da807a574470b5aab156
- https://git.alpinelinux.org/aports/commit/?id=86686eac58e8b2cd03eb04fdcdab2afdd4871e0c
- https://git.alpinelinux.org/aports/commit/?id=b49cc47cb0358234399a4dee1ad276828120df5b
- https://git.alpinelinux.org/aports/commit/?id=e82176fd8bf8ac0c0089a9b3daedcd2c52dafea3