VulnerabilityModified

CVE-2017-5356

Irssi before 0.8.21 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a string containing a formatting sequence (%[) without a closing bracket (]).

HIGH 7.5EPSS 4.78%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (4.78%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Irssi before 0.8.21 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via a string containing a formatting sequence (%[) without a closing bracket (]).

CVSS 3.0: 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 4.78% probability · 91th percentile
CISA KEV: Not listed
Weakness: CWE-125
Affected: irssi/irssi · debian/debian linux
Source: security@debian.org

References

http://www.openwall.com/lists/oss-security/2017/01/12/8Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/01/13/2Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/96581Third Party Advisory, VDB Entry
https://blog.fuzzing-project.org/55-Fuzzing-Irssi-with-Perl-Scripts.htmlExploit, Technical Description, Third Party Advisory
https://irssi.org/security/irssi_sa_2017_01.txtPatch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00022.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/01/12/8Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2017/01/13/2Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/96581Third Party Advisory, VDB Entry
https://blog.fuzzing-project.org/55-Fuzzing-Irssi-with-Perl-Scripts.htmlExploit, Technical Description, Third Party Advisory
https://irssi.org/security/irssi_sa_2017_01.txtPatch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00022.htmlMailing List, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.