SB2019012215 - Infinite loop in apache2 (Alpine package)
Published: January 22, 2019
Security Bulletin ID
SB2019012215
CSH Severity
Medium
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 vulnerability.
1) Infinite loop (CVE-ID: CVE-2019-0190)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the mod_ssl module due to improper handling of renegotiation attempts when OpenSSL 1.1.1 or later is used. A remote attacker can send a specially crafted request that submits malicious input, trigger mod_ssl loop and cause the service to crash.
Remediation
Install update from vendor's website.
References
- 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