Description
PingCAP TiDB v8.1.0 was discovered to contain a buffer overflow via the component expression.ExplainExpressionList. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input. NOTE: PingCAP maintains that the actual reproduction of this issue did not cause the security impact of service interruption to other users. They argue that this is a complex query bug and not a DoS vulnerability.
References (2)
Core 2
Core References
Third Party Advisory
https://gist.github.com/ycybfhb/eec3a1eefe4c85eb22f1bca6114359a1
Exploit, Issue Tracking
https://github.com/pingcap/tidb/issues/53796
Scores
CVSS v3
9.8
EPSS
0.0013
EPSS Percentile
32.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-120
Status
published
Products (1)
pingcap/tidb
8.1.0
Published
Sep 03, 2024
Tracked Since
Feb 18, 2026