Simple Streams GPG Signature Disk Image File input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Simple Streams. This affects an unknown part of the component GPG Signature Handler. The manipulation as part of Disk Image File results in input validation. This vulnerability is known as CVE-2015-1337. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Simple Streams (unknown version). Affected is an unknown code block of the component GPG Signature Handler. The manipulation as part of a Disk Image File leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, and integrity. CVE summarizes:

Simple Streams (simplestreams) does not properly verify the GPG signatures of disk image files, which allows remote mirror servers to spoof disk images and have unspecified other impact via a 403 (aka Forbidden) response.

The weakness was published 10/09/2015 (Website). The advisory is shared for download at bugs.launchpad.net. This vulnerability is traded as CVE-2015-1337 since 01/22/2015. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 86147 (Ubuntu 14.04 LTS / 15.04 : simplestreams vulnerability (USN-2746-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196247 (Ubuntu Security Notification for Simplestreams Vulnerability (USN-2746-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (86147), SecurityFocus (BID 76852†) and Vulnerability Center (SBV-55399†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
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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Nessus ID: 86147
Nessus Name: Ubuntu 14.04 LTS / 15.04 : simplestreams vulnerability (USN-2746-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for simplestreams USN-2746-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/22/2015 🔍
09/24/2015 +245 days 🔍
09/24/2015 +0 days 🔍
09/24/2015 +0 days 🔍
09/25/2015 +1 days 🔍
10/09/2015 +14 days 🔍
10/09/2015 +0 days 🔍
10/12/2015 +3 days 🔍
12/28/2015 +77 days 🔍
11/30/2024 +3260 days 🔍

Sourcesinfo

Advisory: USN-2746-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-1337 (🔍)
GCVE (CVE): GCVE-0-2015-1337
GCVE (VulDB): GCVE-100-78300
SecurityFocus: 76852 - Ubuntu 'simplestreams' Package CVE-2015-1337 Security Bypass Vulnerability
Vulnerability Center: 55399 - Simple Streams Remote Spoofing Vulnerability due to Improperly Verifying the GPG Signatures of Disk Image Files, Medium

Entryinfo

Created: 10/12/2015 10:27
Updated: 11/30/2024 14:04
Changes: 10/12/2015 10:27 (59), 06/19/2018 21:09 (10), 06/20/2022 09:50 (3), 11/30/2024 14:04 (18)
Complete: 🔍
Cache ID: 216:599:103

Once again VulDB remains the best source for vulnerability data.

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