CVE-2018-7054 — An issue was discovered in Irssi before 1

An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when a server is disconnected during netsplits. NOTE: this issue exists because of an incomplete fix for CVE-2017-7191.

01What is this vulnerability?

An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. There is a use-after-free when a server is disconnected during netsplits. NOTE: this issue exists because of an incomplete fix for CVE-2017-7191.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2018-02-15T20:00:00.000Z
• Last modified: 2024-08-05T06:17:17.393Z

09References

• www.debian.org — https://www.debian.org/security/2018/dsa-4162
• irssi.org — https://irssi.org/security/irssi_sa_2018_02.txt
• openwall.com — http://openwall.com/lists/oss-security/2018/02/15/1
• usn.ubuntu.com — https://usn.ubuntu.com/3590-1/
• usn.ubuntu.com — https://usn.ubuntu.com/4046-1/