Dnsmasq up to 2.73rc3 tcp_request data processing

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

A vulnerability was found in Dnsmasq up to 2.73rc3 (Domain Name Software). It has been classified as critical. Affected is the function tcp_request. The manipulation with an unknown input leads to a data processing vulnerability. CWE is classifying the issue as CWE-19. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The tcp_request function in Dnsmasq before 2.73rc4 does not properly handle the return value of the setup_reply function, which allows remote attackers to read process memory and cause a denial of service (out-of-bounds read and crash) via a malformed DNS request.

The weakness was presented 05/08/2015 by Nick Sampanis (Website). The advisory is shared for download at ubuntu.com. This vulnerability is traded as CVE-2015-3294 since 04/10/2015. 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 vulnerability scanner Nessus provides a plugin with the ID 84081 (SUSE SLED11 / SLES11 Security Update : dnsmasq (SUSE-SU-2015:1015-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370600 (FreeBSD DNSMasq Multiple Vulnerabilities).

Upgrading to version 2.73rc4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (84081).

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Data processing
CWE: CWE-19
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84081
Nessus Name: SUSE SLED11 / SLES11 Security Update : dnsmasq (SUSE-SU-2015:1015-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703251
OpenVAS Name: Debian Security Advisory DSA 3251-1 (dnsmasq - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Dnsmasq 2.73rc4
Patch: ad4a8ff7d9097008d7623df8543df435bfddeac8

Timelineinfo

04/10/2015 🔍
05/04/2015 +24 days 🔍
05/04/2015 +0 days 🔍
05/08/2015 +4 days 🔍
05/08/2015 +0 days 🔍
05/09/2015 +1 days 🔍
05/11/2015 +2 days 🔍
06/10/2015 +30 days 🔍
05/10/2022 +2526 days 🔍

Sourcesinfo

Advisory: USN-2593-1
Researcher: Nick Sampanis
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-3294 (🔍)
OVAL: 🔍

SecurityTracker: 1032195
Vulnerability Center: 50001 - Dnsmasq before 2.73rc4 Remote DoS via a Malformed DNS Request, Medium
SecurityFocus: 74452 - Dnsmasq CVE-2015-3294 Remote Denial of Service Vulnerability

Entryinfo

Created: 05/09/2015 20:44
Updated: 05/10/2022 13:23
Changes: 05/09/2015 20:44 (69), 06/28/2017 06:25 (5), 05/10/2022 13:16 (6), 05/10/2022 13:23 (1)
Complete: 🔍

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