Vulnerability Details : CVE-2017-17715
The saveFile method in MediaController.java in the Telegram Messenger application before 2017-12-08 for Android allows directory traversal via a pathname obtained in a file-transfer request from a remote peer, as demonstrated by writing to tgnet.dat or tgnet.dat.bak.
Vulnerability category: Directory traversal
Exploit prediction scoring system (EPSS) score for CVE-2017-17715
Probability of exploitation activity in the next 30 days: 0.15%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 50 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-17715
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST |
|
8.8
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST |
CWE ids for CVE-2017-17715
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-17715
-
https://bugs.chromium.org/p/project-zero/issues/detail?id=1470
1470 - Telegram Messenger for Android: Directory Traversal in Downloading Documents - project-zero - MonorailIssue Tracking;Third Party Advisory
Products affected by CVE-2017-17715
- cpe:2.3:a:telegram:telegram_messenger:*:*:*:*:*:android:*:*