Vulnerability Details : CVE-2021-43304
Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy<copy_amount>(op, ip, copy_end), don’t exceed the destination buffer’s limits.
Vulnerability category: OverflowMemory Corruption
Products affected by CVE-2021-43304
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:a:yandex:clickhouse:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43304
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 37 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43304
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2021-43304
-
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Assigned by: reefs@jfrog.com (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-43304
-
https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html
[SECURITY] [DLA 3176-1] clickhouse security updateMailing List;Third Party Advisory
-
https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms
Page not found | JFrogExploit;Third Party Advisory
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