mktexlsr up to 36625 link following

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.
5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in mktexlsr up to 36625. It has been classified as problematic. This issue affects some unknown processing. Performing a manipulation results in link following. This vulnerability is reported as CVE-2015-5700. The attack requires a local approach. No exploit exists. Upgrading the affected component is recommended. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Detailsinfo

A vulnerability was found in mktexlsr up to 36625. It has been classified as problematic. This affects an unknown code block. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

mktexlsr revision 36855, and before revision 36626 as packaged in texlive allows local users to write to arbitrary files via a symlink attack.

The bug was discovered 07/30/2015. The weakness was disclosed 08/25/2017 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2015-5700 since 07/30/2015. Attacking locally is a requirement. The requirement for exploitation is a authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 757 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 118081 (Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : texlive-bin vulnerabilities (USN-3788-1)), 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 197274 (Ubuntu Security Notification for Texlive-bin Vulnerabilities (USN-3788-1)).

Upgrading to version 36626 eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (118081). The entries VDB-105748 and VDB-124416 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

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

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 118081
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : texlive-bin vulnerabilities (USN-3788-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: mktexlsr 36626

Timelineinfo

07/30/2015 🔍
07/30/2015 +0 days 🔍
08/25/2017 +757 days 🔍
08/25/2017 +0 days 🔍
08/27/2017 +2 days 🔍
10/11/2018 +410 days 🔍
10/12/2018 +1 days 🔍
12/16/2022 +1526 days 🔍

Sourcesinfo

Advisory: USN-3788-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5700 (🔍)
GCVE (CVE): GCVE-0-2015-5700
GCVE (VulDB): GCVE-100-105747
See also: 🔍

Entryinfo

Created: 08/27/2017 06:44 AM
Updated: 12/16/2022 04:17 PM
Changes: 08/27/2017 06:44 AM (59), 11/10/2019 12:04 PM (15), 12/16/2022 04:17 PM (4)
Complete: 🔍
Cache ID: 244:B1C:40

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!