VDB-140112 · CVE-2019-12854 · USN-4213-1

Squid Web Proxy up to 4.7 Access Protection cachemgr.cgi memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	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.
6.4	$5k-$25k	0.00

Summaryinfo

A vulnerability classified as problematic was found in Squid Web Proxy up to 4.7. Impacted is an unknown function of the file cachemgr.cgi of the component Access Protection. The manipulation results in memory corruption. This vulnerability is reported as CVE-2019-12854. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in Squid Web Proxy up to 4.7 (Firewall Software). Affected is an unknown function of the file cachemgr.cgi of the component Access Protection. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. CVE summarizes:

Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory. On systems with memory access protections, this can cause the CGI process to terminate unexpectedly, resulting in a denial of service for all clients using it.

The weakness was disclosed 08/15/2019 (Website). The advisory is shared for download at lists.fedoraproject.org. This vulnerability is traded as CVE-2019-12854 since 06/16/2019. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 11/25/2023).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Firewall Software

Vendor

Squid

Name

Web Proxy

Version

License

open-source

Website

Vendor: http://www.squid-cache.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/16/2019 🔍
08/15/2019 +60 days 🔍
08/16/2019 +1 days 🔍
11/25/2023 +1562 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: USN-4213-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-12854 (🔍)
GCVE (CVE): GCVE-0-2019-12854
GCVE (VulDB): GCVE-100-140112

Entryinfo

Created: 08/16/2019 07:12
Updated: 11/25/2023 16:10
Changes: 08/16/2019 07:12 (56), 07/29/2020 10:01 (1), 11/25/2023 16:10 (3)
Complete: 🔍
Cache ID: 216::103