Podatność CVE-2020-15810


Publikacja: 2020-09-02

Opis:
An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Smuggling 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 proxy cache and any downstream caches with content from an arbitrary source. When configured for relaxed header parsing (the default), Squid relays headers containing whitespace characters to upstream servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.

Typ:

CWE-444

(Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling'))

CVSS2 => (AV:N/AC:M/Au:S/C:N/I:P/A:N)

Ogólna skala CVSS
Znaczenie
Łatwość wykorzystania
3.5/10
2.9/10
6.8/10
Wymagany dostęp
Złożoność ataku
Autoryzacja
Zdalny
Średnia
Jednorazowa
Wpływ na poufność
Wpływ na integralność
Wpływ na dostępność
Brak
Częściowy
Brak
Affected software
Squid-cache -> Squid 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 Referencje:
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00017.html
https://github.com/squid-cache/squid/security/advisories/GHSA-3365-q9qx-f98m
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BMTFLVB7GLRF2CKGFPZ4G4R5DIIPHWI3/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HJJDI7JQFGQLVNCKMVY64LAFMKERAOK7/
https://usn.ubuntu.com/4477-1/
https://www.debian.org/security/2020/dsa-4751

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