Information disclosure in Telegram Desktop
CVE-2018-17780
Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.018 (77.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Telegram Desktop — versions 1.3.14
- Telegram Messenger — versions 3.3.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/105521 (VDB Entry, Third Party Advisory, vdb-entry)
- www.inputzero.io/2018/09/bug-bounty-telegram-cve-2018-17780.html (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-17780?
- CVE-2018-17780 is a medium-severity vulnerability in Telegram Desktop, classified under Information Disclosure. CVSS score: 6.5/10. Published 2018-09-29.
- How severe is CVE-2018-17780?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2018-17780 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.