Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1nNDlxLWp3NDItNng4Nc4AA74Q

thelounge may publicly disclose of all usernames/idents via port 113

Per RFC 1413, The unique identifying tuple includes not only the ports, but also the both addresses. Without the addresses, the information becomes both non-unique and public:

• If multiple connections happen to use the same local port number (which is possible if the addresses differ), the username of the first is returned for all, resulting in the wrong ident for all but the first.
• By not checking the connection address, the information becomes public. Because there is only a relatively small number of local ports, and the remote ports are likely to be either 6667 or 6697, it becomes trivial to scan the entire range to get a list of idents.

To prevent this from happening, disable identd or upgrade to a non vulnerable version.

Permalink: https://github.com/advisories/GHSA-g49q-jw42-6x85
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1nNDlxLWp3NDItNng4Nc4AA74Q
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Low
Classification: General
Published: 7 months ago
Updated: 7 months ago

Identifiers: GHSA-g49q-jw42-6x85
References:

• https://github.com/thelounge/thelounge/security/advisories/GHSA-g49q-jw42-6x85
• https://github.com/thelounge/thelounge/pull/4872
• https://github.com/advisories/GHSA-g49q-jw42-6x85

Repository: https://github.com/thelounge/thelounge
Blast Radius: 0.0

Affected Packages