Vulnerability CVE-2019-15717


Published: 2019-08-29

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

Type:

CWE-416

(Use After Free)

Vendor: Canonical
Product: Ubuntu linux 
Version: 19.04;
Vendor: Irssi
Product: Irssi 
Version: 1.2.1; 1.2.0;

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial

 References:
http://www.openwall.com/lists/oss-security/2019/08/29/3
http://www.openwall.com/lists/oss-security/2019/08/29/5
https://irssi.org/security/irssi_sa_2019_08.txt
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JDDRTNKDDO52CO5USJ73BE6XVG7BD4KP/
https://usn.ubuntu.com/4119-1/

Related CVE
CVE-2019-13045
Irssi before 1.0.8, 1.1.x before 1.1.3, and 1.2.x before 1.2.1, when SASL is enabled, has a use after free when sending SASL login to the server.
CVE-2019-5882
Irssi 1.1.x before 1.1.2 has a use after free when hidden lines are expired from the scroll buffer.
CVE-2018-7054
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.
CVE-2018-7053
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 SASL messages are received in an unexpected order.
CVE-2018-7052
An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. When the number of windows exceeds the available space, a crash due to a NULL pointer dereference would occur.
CVE-2018-7051
An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. Certain nick names could result in out-of-bounds access when printing theme strings.
CVE-2018-7050
An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. A NULL pointer dereference occurs for an "empty" nick.
CVE-2018-5208
In Irssi before 1.0.6, a calculation error in the completion code could cause a heap buffer overflow when completing certain strings.

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