Vulnerability CVE-2018-7053
Published: 2018-02-15

Description:
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.

Type:

CWE-416

 (Use After Free)

Vendor: Debian
Product: Debian linux 
Version: 9.0;
Vendor: Canonical
Product: Ubuntu linux 
Version:
17.10
16.04
14.04
Vendor: Irssi
Product: Irssi 
Version:
1.1.0
1.0.6
1.0.5
1.0.4
1.0.3
1.0.2
1.0.1
1.0.0
0.8.9
0.8.8
0.8.7
0.8.6
0.8.5
0.8.4
0.8.3
0.8.21
0.8.20
0.8.2
0.8.19
0.8.18
0.8.17
0.8.16
0.8.15
0.8.14
0.8.13
0.8.12
0.8.11
0.8.10
0.8.1
0.8.0
0.7.98.3
0.7.98.2
0.7.98
0.7.97
0.7.96
0.7.95
0.7.94
0.7.93
0.7.92
0.7.91
0.7.90
0.7.28
0.7.27
0.7.26
0.7.25
0.7.24
0.7.23
0.7.22
0.7.21
0.7.20.1
0.7.20
0.7.19
0.7.18
0.7.17
0.7.16

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://openwall.com/lists/oss-security/2018/02/15/1
https://irssi.org/security/irssi_sa_2018_02.txt
https://usn.ubuntu.com/3590-1/
https://www.debian.org/security/2018/dsa-4162

Related CVE
CVE-2019-15717
 Irssi 1.2.x before 1.2.2 has a use-after-free if the IRC server sends a double CAP.
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-2018-7052
 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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