SB2018051740 - Improper input validation in znc (Alpine package)
Published: May 17, 2018
Security Bulletin ID
SB2018051740
Severity
Low
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) Improper input validation (CVE-ID: CVE-2018-14055)
The vulnerability allows a remote attacker to gain elevated privileges on the target system.
The vulnerability exists due to improper validation of untrusted lines coming from the network. A remote unauthenticated attacker can supply specially crafted input to inject rogue values into znc.conf and gain elevated privileges.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=9f597246c67939eeee73b2e42c904193c37d14b1
- https://git.alpinelinux.org/aports/commit/?id=16956b90ab430f1836112c44807b832d8f520760
- https://git.alpinelinux.org/aports/commit/?id=0fec0a0abada9125f1b853d55225ac39a0b3da5c
- https://git.alpinelinux.org/aports/commit/?id=bd4fb24c372fc0a49ab402a6773ad26ee7314d80
- https://git.alpinelinux.org/aports/commit/?id=46eeaeb856c3f54e2bd5641aac51a9b2ddb9fb8c
- https://git.alpinelinux.org/aports/commit/?id=98215e479882b7bbf540e8afb166a2b5c3504ed8
- https://git.alpinelinux.org/aports/commit/?id=e5e70ffbec9391d4976c831b7dd67cff59754a71
- https://git.alpinelinux.org/aports/commit/?id=08a520794c55b9996da14cb6c7bf9b94aba0f3b7