Description
ircu 2.10.12.05 and earlier allows remote attackers to discover the hidden IP address of arbitrary +x users via a series of /silence commands with (1) CIDR mask arguments or (2) certain other arguments that represent groups of IP addresses, then monitoring CTCP ping replies.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ircd-ircu | 2.10.12.10.dfsg1-1 | — |
| Debian 13 | ircd-ircu | 2.10.12.10.dfsg1-1 | — |
| Debian 12 | ircd-ircu | 2.10.12.10.dfsg1-1 | — |
References
- 3031 third-party-advisory
- 20070812 Multiple vulnerabilities in ircu mailing-list
- ircu-ip-information-disclosure(35997) vdb-entry
- 25285 vdb-entry