CVE-2021-41991

Katalog CVE

CVSS 7.5 · High EPSS 5,3%

Kerentanan Integer Overflow or Wraparound pada strongswan, debian linux +23 lainnya. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

The in-memory certificate cache in strongSwan before 5.9.4 has a remote integer overflow upon receiving many requests with different certificates to fill the cache and later trigger the replacement of cache entries. The code attempts to select a less-often-used cache entry by means of a random number generator, but this is not done correctly. Remote code execution might be a slight possibility.

Rincian

Terbit di NVD

18 Oktober 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-190: Integer Overflow or Wraparound

EPSS (30 hari)

5,3% peluang dieksploitasi; lebih tinggi dari 92,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://cert-portal.siemens.com/productcert/pdf/ssa-539476.pdf patch · advisory pihak ketiga
• https://github.com/strongswan/strongswan/releases/tag/5.9.4 advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2021/10/msg00014.html mailing list · advisory pihak ketiga
• https://www.debian.org/security/2021/dsa-4989 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FJSATD2R2XHT...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WQSQ3BEC22NF4...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3TQ32JLJOBJD...
• https://www.strongswan.org/blog/2021/10/18/strongswan-vulnerability-%28cve-2021-41991%29.html