Detections
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Alpine: multiple squid packages: security update to 4.13.0-r0
medium Tenable Cloud Security Plugin ID 424524
Description
There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:- 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. (CVE-2020-15810)
- 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. (CVE-2020-15811)
- Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all
available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when
cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply()
livelocking in peer_digest.cc mishandles EOF. (CVE-2020-24606)
See Also
https://security.alpinelinux.org/vuln/CVE-2020-15810
Plugin Details
Severity: Medium
ID: 424524
Version: Revision 1.7
Type: Local
Published: 4/4/2025
Updated: 5/30/2025
Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Medium
Score: 5
Percentile: 94.82
CVSS v2
Risk Factor: Medium
Base Score: 4
Temporal Score: 3
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N
CVSS Score Source: CVE-2020-15811
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.7
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 8/24/2020
Reference Information
CVE: CVE-2020-15810, CVE-2020-15811, CVE-2020-24606
IAVB: 2020-B-0050-S