Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2010-1155

Irssi before 0.8.15, when SSL is used, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field or a Subject Alternative Name field of the X.509 certificate, which allows man-in-the-middle attackers to spoof IRC servers via an arbitrary certificate.

Security Impact Summary

CVE-2010-1155 is a security vulnerability that . Impacting 1 product from irssi organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2010, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2010-04-16T19:30:00.350

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	irssi	irssi	≤ 0.8.15	Yes
Application	irssi	irssi	0.8.0	Yes
Application	irssi	irssi	0.8.1	Yes
Application	irssi	irssi	0.8.2	Yes
Application	irssi	irssi	0.8.3	Yes
Application	irssi	irssi	0.8.4	Yes
Application	irssi	irssi	0.8.5	Yes
Application	irssi	irssi	0.8.6	Yes
Application	irssi	irssi	0.8.7	Yes
Application	irssi	irssi	0.8.8	Yes
Application	irssi	irssi	0.8.9	Yes
Application	irssi	irssi	0.8.10	Yes
Application	irssi	irssi	0.8.10	Yes
Application	irssi	irssi	0.8.10	Yes
Application	irssi	irssi	0.8.10	Yes
Application	irssi	irssi	0.8.10	Yes
Application	irssi	irssi	0.8.11	Yes
Application	irssi	irssi	0.8.11	Yes
Application	irssi	irssi	0.8.11	Yes
Application	irssi	irssi	0.8.12	Yes
Application	irssi	irssi	0.8.12	Yes
Application	irssi	irssi	0.8.13	Yes
Application	irssi	irssi	0.8.13	Yes
Application	irssi	irssi	0.8.14	Yes

References

http://github.com/ensc/irssi-proxy/commit/85bbc05b21678e80423815d2ef1dfe26208491ab ([email protected])
http://irssi.org/news ([email protected])
http://irssi.org/news/ChangeLog ([email protected])
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041054.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html ([email protected])
http://marc.info/?l=oss-security&m=127098845125270&w=2 ([email protected])
http://marc.info/?l=oss-security&m=127110132019166&w=2 ([email protected])
http://marc.info/?l=oss-security&m=127116251220784&w=2 ([email protected])
http://marc.info/?l=oss-security&m=127119240204394&w=2 ([email protected])
http://secunia.com/advisories/39365 Vendor Advisory ([email protected])
http://secunia.com/advisories/39620 ([email protected])
http://secunia.com/advisories/39797 ([email protected])
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.497301 ([email protected])
http://www.ubuntu.com/usn/USN-929-1 ([email protected])
http://www.vupen.com/english/advisories/2010/0856 Patch, Vendor Advisory ([email protected])
http://www.vupen.com/english/advisories/2010/0987 ([email protected])
http://www.vupen.com/english/advisories/2010/1107 ([email protected])
http://www.vupen.com/english/advisories/2010/1110 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/57790 ([email protected])
http://github.com/ensc/irssi-proxy/commit/85bbc05b21678e80423815d2ef1dfe26208491ab (af854a3a-2127-422b-91ae-364da2661108)
http://irssi.org/news (af854a3a-2127-422b-91ae-364da2661108)
http://irssi.org/news/ChangeLog (af854a3a-2127-422b-91ae-364da2661108)
http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041054.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html (af854a3a-2127-422b-91ae-364da2661108)
http://marc.info/?l=oss-security&m=127098845125270&w=2 (af854a3a-2127-422b-91ae-364da2661108)
http://marc.info/?l=oss-security&m=127110132019166&w=2 (af854a3a-2127-422b-91ae-364da2661108)
http://marc.info/?l=oss-security&m=127116251220784&w=2 (af854a3a-2127-422b-91ae-364da2661108)
http://marc.info/?l=oss-security&m=127119240204394&w=2 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/39365 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/39620 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/39797 (af854a3a-2127-422b-91ae-364da2661108)
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.497301 (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-929-1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2010/0856 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2010/0987 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2010/1107 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2010/1110 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/57790 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For irssi's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.