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CVE-2023-46724

nvd nist
Published: Nov 1, 2023Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: NVD

Description

Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl` are vulnerable to a Denial of Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version 6.4. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. Those who you use a prepackaged version of Squid should refer to the package vendor for availability information on updated packages.

Affected (1)

Products: Squid Cache: Squid
Squid Cache
1 product
Squid
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Squid
From 3.3.0.1 to 6.4

Related CWEs

CWE-125
Out-of-bounds Read
The product reads data past the end, or before the beginning, of the intended buffer.
CWE-1285
Improper Validation of Specified Index, Position, or Offset in Input
The product receives input that is expected to specify an index, position, or offset into an indexable resource such as a buffer or file, but it does not validate or incorrectly validates that the specified index/position/offset has the required properties.
CWE-129
Improper Validation of Array Index
The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.
CWE-295
Improper Certificate Validation
The product does not validate, or incorrectly validates, a certificate.
CWE-786
Access of Memory Location Before Start of Buffer
The product reads or writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.
CWE-823
Use of Out-of-range Pointer Offset
The product performs pointer arithmetic on a valid pointer, but it uses an offset that can point outside of the intended range of valid memory locations for the resulting pointer.

References (14)

Source: security-advisories@github.com
Mailing ListPatch
Source: security-advisories@github.com
Mailing ListPatch
Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Vendor Advisory
Source: security-advisories@github.com
Source: security-advisories@github.com
Source: security-advisories@github.com
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatch
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.