Squid Proxy up to 6.4 HTTP Message buffer over-read

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Squid Proxy up to 6.4. This issue affects some unknown processing of the component HTTP Message Handler. The manipulation leads to buffer over-read. This vulnerability is listed as CVE-2023-49285. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Squid Proxy up to 6.4 (Firewall Software). It has been rated as problematic. This issue affects some unknown processing of the component HTTP Message Handler. The manipulation with an unknown input leads to a buffer over-read vulnerability. Using CWE to declare the problem leads to CWE-126. The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. Impacted is availability. The summary by CVE is:

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Buffer Overread bug Squid is vulnerable to a Denial of Service attack against Squid HTTP Message processing. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

The weakness was presented 12/05/2023 as GHSA-8w9r-p88v-mmx9. The advisory is shared at github.com. The identification of this vulnerability is CVE-2023-49285 since 11/24/2023. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 236724 (Alibaba Cloud Linux 3 : 0020: squid:4 (ALINUX3-SA-2024:0020)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.5 eliminates this vulnerability. Applying the patch 77b3fb4df0f126784d5fd4967c28ed40eb8d521b is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (236724). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 8.6
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer over-read
CWE: CWE-126 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 236724
Nessus Name: Alibaba Cloud Linux 3 : 0020: squid:4 (ALINUX3-SA-2024:0020)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Proxy 6.5
Patch: 77b3fb4df0f126784d5fd4967c28ed40eb8d521b

Timelineinfo

11/24/2023 🔍
12/05/2023 +11 days 🔍
12/05/2023 +0 days 🔍
05/16/2025 +528 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: GHSA-8w9r-p88v-mmx9
Status: Confirmed

CVE: CVE-2023-49285 (🔍)
GCVE (CVE): GCVE-0-2023-49285
GCVE (VulDB): GCVE-100-246833

Entryinfo

Created: 12/05/2023 08:12
Updated: 05/16/2025 18:03
Changes: 12/05/2023 08:12 (53), 12/05/2023 13:40 (1), 12/23/2023 12:06 (11), 05/16/2025 18:03 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

 Anonymous User (+0)
3 years ago
Good morning
Could you check the CPE for the lack of ":" before the impacted version?
We would appreciate it very much.
Best regards,
TEAM Cert
 VulDB Community Team3 years ago
Thank you, we have just fixed the CPE.

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