SB2018043027 - Insufficient encapsulation in wireshark (Alpine package)
Published: April 30, 2018
Security Bulletin ID
SB2018043027
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) Insufficient encapsulation (CVE-ID: CVE-2018-9256)
CWE-ID: CWE-485 - Insufficient Encapsulation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/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 epan/dissectors/packet-lwapp.c due to limiting the encapsulation levels to restrict the recursion depth. A remote attacker can trick the victim into opening a specially crafted packet trace file and cause the LWAPP dissector to crash.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=215ab32e4b19dfb33cc73a102bd0beab21fe66c0
- https://git.alpinelinux.org/aports/commit/?id=3296b080a93bebe2fa5a42ed0bda9351f68b3f30
- https://git.alpinelinux.org/aports/commit/?id=82f356f8c4189cfb0802954a2e20f09baf6a49a0
- https://git.alpinelinux.org/aports/commit/?id=ec81538d245e98a04f14f8f9c4dc6cad899c18d3