CVE-2021-32765

Katalog CVE

CVSS 8.8 · High EPSS 2,1%

Kerentanan Integer Overflow or Wraparound pada hiredis, debian linux +1 lainnya. Skor CVSS 3.1 8.8 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

4 Oktober 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

8.8 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-190: Integer Overflow or Wraparound
CWE-680: Integer Overflow to Buffer Overflow

EPSS (30 hari)

2,1% peluang dieksploitasi; lebih tinggi dari 81,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/redis/hiredis/commit/76a7b10005c70babee357a7d0f2becf28ec7ed1e patch · advisory pihak ketiga
• https://github.com/redis/hiredis/security/advisories/GHSA-hfm9-39pp-55p2 mitigasi · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/10/msg00007.html mailing list · advisory pihak ketiga
• https://security.gentoo.org/glsa/202210-32 advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20211104-0003/ advisory pihak ketiga
• https://wiki.sei.cmu.edu/confluence/display/c/MEM07-C.+Ensure+that+the+arguments+to+calloc%28%29%2C+when+multi... advisory pihak ketiga