CVE - CVE-2021-32765

CVE-ID
CVE-2021-32765	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Hiredis is a minimalistic C client library for the Redis database. In affected versions Hiredis is vulnurable to integer overflow if provided maliciously crafted or corrupted `RESP` `mult-bulk` protocol data. When parsing `multi-bulk` (array-like) replies, hiredis fails to check if `count * sizeof(redisReply*)` can be represented in `SIZE_MAX`. If it can not, and the `calloc()` call doesn't itself make this check, it would result in a short allocation and subsequent buffer overflow. Users of hiredis who are unable to update may set the [maxelements](https://github.com/redis/hiredis#reader-max-array-elements) context option to a value small enough that no overflow is possible.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://security.netapp.com/advisory/ntap-20211104-0003/ CONFIRM:https://github.com/redis/hiredis/security/advisories/GHSA-hfm9-39pp-55p2 URL:https://github.com/redis/hiredis/security/advisories/GHSA-hfm9-39pp-55p2 GENTOO:GLSA-202210-32 URL:https://security.gentoo.org/glsa/202210-32 MISC:https://github.com/redis/hiredis/commit/76a7b10005c70babee357a7d0f2becf28ec7ed1e URL:https://github.com/redis/hiredis/commit/76a7b10005c70babee357a7d0f2becf28ec7ed1e MISC:https://wiki.sei.cmu.edu/confluence/display/c/MEM07-C.+Ensure+that+the+arguments+to+calloc%28%29%2C+when+multiplied%2C+do+not+wrap URL:https://wiki.sei.cmu.edu/confluence/display/c/MEM07-C.+Ensure+that+the+arguments+to+calloc%28%29%2C+when+multiplied%2C+do+not+wrap MLIST:[debian-lts-announce] 20211012 [SECURITY] [DLA 2783-1] hiredis security update URL:https://lists.debian.org/debian-lts-announce/2021/10/msg00007.html
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20210512	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20210512)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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