NULL pointer dereference in Irssi

CVE-2017-5193

The nickcmp function in Irssi before 0.8.21 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a message without a nick.

EPSS: 0.056 (92.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Third Party Advisory)
  • cve@mitre.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
  • cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
  • cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)

Frequently asked questions

What is CVE-2017-5193?
CVE-2017-5193 is a high-severity vulnerability in Irssi, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2017-03-03.
How severe is CVE-2017-5193?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2017-5193 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.