PT-2017-14831 · Tin+2 · Tin+2

Published 2017-12-14 · Updated 2024-08-05 · CVE-2017-17520

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions TIN version 2.4.1

Description The issue concerns the tools/url handler.pl script in TIN, which does not validate strings before launching the program specified by the BROWSER environment variable. This might allow remote attackers to conduct argument-injection attacks via a crafted URL. It is noted that this behavior might be intentional, as the documentation states that url handler.pl was designed to work with TIN, which only issues shell-escaped absolute URLs.

Recommendations For TIN version 2.4.1, consider validating strings before launching the program specified by the BROWSER environment variable to prevent potential argument-injection attacks. As a temporary workaround, restrict the use of the BROWSER environment variable to minimize the risk of exploitation.

Fix

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

ALT-PU-2017-3594

CVE-2017-17520

Affected Products

Alt Linux

Debian

Tin

References · 10

• https://osv.dev/vulnerability/CVE-2017-17520 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-17520 · Security Note
• https://cve.org/CVERecord?id=CVE-2017-17520 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2017-17520 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-17520 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-17520 · Vendor Advisory
• https://t.me/cvenotify/89286 · Telegram Post
• https://t.me/cvenotify/87162 · Telegram Post
• https://sources.debian.org/src/tin/1:2.4.1-1/tools/url_handler.pl/?hl=120#L120 · Note
• https://t.me/cvenotify/88224 · Telegram Post