CVE-2019-15717 : Irssi 1.2.x before 1.2.2 has a use-after-free if the IRC server sends a double C

Irssi 1.2.x before 1.2.2 has a use-after-free if the IRC server sends a double CAP.

Published 2019-08-29 17:15:15

Updated 2019-09-14 19:15:11

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2019-15717

Irssi » Irssi
Versions from including (>=) 1.2.0 and before (<) 1.2.2
cpe:2.3:a:irssi:irssi:*:*:*:*:*:*:*:*
Matching versions
Canonical » Ubuntu Linux » Version: 19.04
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.43%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 75 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Assigned by: nvd@nist.gov (Primary)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JDDRTNKDDO52CO5USJ73BE6XVG7BD4KP/

[SECURITY] Fedora 31 Update: irssi-1.2.2-1.fc31 - package-announce - Fedora Mailing-Lists
http://www.openwall.com/lists/oss-security/2019/08/29/5

oss-security - Re: Irssi 1.2.2:CVE-2019-15717
Mailing List;Third Party Advisory
https://irssi.org/security/irssi_sa_2019_08.txt

Vendor Advisory
https://usn.ubuntu.com/4119-1/

USN-4119-1: Irssi vulnerability | Ubuntu security notices
Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/08/29/3

oss-security - Irssi 1.2.2:CVE-2019-15717
Mailing List;Third Party Advisory

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