CVE-2020-15811

Katalog CVE

CVSS 6.5 · Medium EPSS 4,1%

Kerentanan Incorrect Comparison pada squid-cache squid, canonical ubuntu linux +3 lainnya. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Splitting attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any downstream caches with content from an arbitrary source. Squid uses a string search instead of parsing the Transfer-Encoding header to find chunked encoding. This allows an attacker to hide a second request inside Transfer-Encoding: it is interpreted by Squid as chunked and split out into a second request delivered upstream. Squid will then deliver two distinct responses to the client, corrupting any downstream caches.

Rincian

Terbit di NVD

2 September 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-697: Incorrect Comparison

EPSS (30 hari)

4,1% peluang dieksploitasi; lebih tinggi dari 90,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/squid-cache/squid/security/advisories/GHSA-c7p8-xqhm-49wv patch
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html mailing list · advisory pihak ketiga
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html mailing list · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2020/10/msg00005.html mailing list · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BE6FKUN7IGTIR... mailing list · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMTFLVB7GLRF2... mailing list · advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HJJDI7JQFGQLV... mailing list · advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210219-0007/ advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210226-0006/ advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20210226-0007/ broken link · advisory pihak ketiga
• https://usn.ubuntu.com/4477-1/ advisory pihak ketiga
• https://usn.ubuntu.com/4551-1/ advisory pihak ketiga
• https://www.debian.org/security/2020/dsa-4751 mailing list · advisory pihak ketiga