SB2021062913 - SUSE update for lua53
Published: June 29, 2021
Security Bulletin ID
SB2021062913
Severity
Medium
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Integer underflow (CVE-ID: CVE-2020-24370)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
ldebug.c in Lua 5.4.0 allows a negation overflow and segmentation fault in getlocal and setlocal, as demonstrated by getlocal(3,2^31).
2) Input validation error (CVE-ID: CVE-2020-24371)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
lgc.c in Lua 5.4.0 mishandles the interaction between barriers and the sweep phase, leading to a memory access violation involving collectgarbage.
Remediation
Install update from vendor's website.