PT-2017-14966 · Telegram · Telegram Messenger For Android

Published 2017-12-16 · Updated 2018-01-04 · CVE-2017-17715

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 Telegram Messenger for Android versions prior to 2017-12-08

Description The issue concerns the saveFile method in MediaController.java, which allows directory traversal. This can be achieved via a pathname obtained in a file-transfer request from a remote peer. For example, it can be used to write to files such as tgnet.dat or tgnet.dat.bak.

Recommendations For versions prior to 2017-12-08, update to a version released after 2017-12-08 to resolve the issue. As a temporary workaround, consider restricting file-transfer requests from remote peers to minimize the risk of exploitation.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2017-17715

Affected Products

Telegram Messenger For Android

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2017-17715 · Security Note
• https://osv.dev/vulnerability/CVE-2017-17715 · Vendor Advisory
• https://bugs.chromium.org/p/project-zero/issues/detail?id=1470 · Note