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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...

7.5 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

2.31%Up 1.3 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

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.

Record
CVE-2018-7052
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-476
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2018-7052
Updated
2026-11-02
EUVDEUVD-2018-18795 No score

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.

Record
EUVD-2018-18795
Updated
2026-11-03
GitHub AdvisoriesGHSA-2r5h-wgv6-m4rv 7.5

An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. When the number of windows...

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.

Record
GHSA-2r5h-wgv6-m4rv
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
OSVALPINE-CVE-2018-7052 7.5

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.

Record
ALPINE-CVE-2018-7052
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
OSV 7.5

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.

Record
CVE-2018-7052
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 7 moreShow less
OSVDEBIAN-CVE-2018-7052 7.5

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.

Record
DEBIAN-CVE-2018-7052
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-7052 7.5

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.

Record
UBUNTU-CVE-2018-7052
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2018-0132 No score

Updated irssi packages fix security vulnerability

Null pointer dereference when an "empty" nick has been observed by Irssi (CVE-2018-7050).

Certain nick names could result in out of bounds access when printing theme strings (CVE-2018-7051).

When the number of windows exceed the available space, Irssi would crash due to Null pointer dereference (CVE-2018-7052).

Use after free when SASL messages are received in unexpected order (CVE-2018-7053).

Use after free when server is disconnected during netsplits (CVE-2018-7054).

Record
MGASA-2018-0132
Updated
2026-11-02
OSVopenSUSE-SU-2018:0475-1 No score

Security update for irssi

This update for irssi fixes the following security issues:

  • CVE-2018-7054: Use after free when server is disconnected during netsplits
  • CVE-2018-7053: Use after free when SASL messages are received in unexpected order
  • CVE-2018-7050: Null pointer dereference when an 'empty' nick has been observed
  • CVE-2018-7052: When the number of windows exceed the available space, Irssi would crash due to Null pointer dereference
  • CVE-2018-7051: Certain nick names could result in out of bounds access when printing theme strings
Record
openSUSE-SU-2018:0475-1
Updated
2026-11-02
OSVopenSUSE-SU-2018:0477-1 No score

Security update for irssi

This update for irssi fixes the following security issues:

  • CVE-2018-7054: Use after free when server is disconnected during netsplits
  • CVE-2018-7053: Use after free when SASL messages are received in unexpected order
  • CVE-2018-7050: Null pointer dereference when an 'empty' nick has been observed
  • CVE-2018-7052: When the number of windows exceed the available space, Irssi would crash due to Null pointer dereference
  • CVE-2018-7051: Certain nick names could result in out of bounds access when printing theme strings
Record
openSUSE-SU-2018:0477-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10865-1 No score

irssi-1.2.3-2.4 on GA media

These are all security issues fixed in the irssi-1.2.3-2.4 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10865-1
Updated
2026-11-02
OSVUSN-3590-1 No score

irssi vulnerabilities

It was discovered that Irssi incorrectly handled certain empty nick names. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-7050)

It was discovered that Irssi incorrectly handled certain nick names. An attacker could possibly use this to access sensitive information. (CVE-2018-7051)

It was discovered that Irssi incorrectly handled an increase in the number of windows. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-7052)

It was discovered that Irssi incorrectly handled certain messages. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-7053)

It was discovered that Irssi incorrectly handled certain disconnections. An attacker could possibly use this to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 17.10. (CVE-2018-7054)

Record
USN-3590-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
irssi
Alpine:v3.10
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.11
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.12
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.13
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.14
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.15
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.16
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.17
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.18
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.19
 before 1.1.1-r0
1.1.1-r0
Show 21 moreShow less
Affected packages
PackageAffectedFixed
irssi
Alpine:v3.20
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.21
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.22
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.23
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.24
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.6
 before 1.0.6-r0
1.0.6-r0
irssi
Alpine:v3.7
 before 1.0.6-r0
1.0.6-r0
irssi
Alpine:v3.8
 before 1.1.1-r0
1.1.1-r0
irssi
Alpine:v3.9
 before 1.1.1-r0
1.1.1-r0
irssi
Debian:12
 before 1.0.7-1
1.0.7-1
irssi
Debian:13
 before 1.0.7-1
1.0.7-1
irssi
Debian:14
 before 1.0.7-1
1.0.7-1
irssi
Debian:7
From an advisory covering 2 CVEs
 before 0.8.15-5+deb7u5, plus listed versions
0.8.15-50.8.15-5+deb7u10.8.15-5+deb7u20.8.15-5+deb7u30.8.15-5+deb7u4
0.8.15-5+deb7u5
irssi
Debian:9
From an advisory covering 9 CVEs
 before 1.0.7-1~deb9u1, plus listed versions
1.0.2-11.0.2-1+deb9u11.0.2-1+deb9u21.0.2-1+deb9u31.0.3-11.0.4-11.0.5-11.0.7-1~deb9u1~bpo8+1
1.0.7-1~deb9u1
irssi
Mageia:6
From an advisory covering 5 CVEs
 before 1.0.7-1.mga6
1.0.7-1.mga6
irssi
Ubuntu:14.04:LTS
 before 0.8.15-5ubuntu3.5, plus listed versions
0.8.15-5ubuntu20.8.15-5ubuntu30.8.15-5ubuntu3.10.8.15-5ubuntu3.20.8.15-5ubuntu3.30.8.15-5ubuntu3.4
0.8.15-5ubuntu3.5
irssi
Ubuntu:16.04:LTS
 before 0.8.19-1ubuntu1.7, plus listed versions
0.8.17-1ubuntu10.8.17-1ubuntu20.8.18-1ubuntu10.8.19-1ubuntu10.8.19-1ubuntu1.2
Show 4 moreShow less
0.8.19-1ubuntu1.30.8.19-1ubuntu1.40.8.19-1ubuntu1.50.8.19-1ubuntu1.6
0.8.19-1ubuntu1.7
irssi
Ubuntu:14.04:LTS
From an advisory covering 5 CVEs
 before 0.8.15-5ubuntu3.5, plus listed versions
0.8.15-5ubuntu20.8.15-5ubuntu30.8.15-5ubuntu3.10.8.15-5ubuntu3.20.8.15-5ubuntu3.30.8.15-5ubuntu3.4
0.8.15-5ubuntu3.5
irssi
Ubuntu:16.04:LTS
From an advisory covering 5 CVEs
 before 0.8.19-1ubuntu1.7, plus listed versions
0.8.17-1ubuntu10.8.17-1ubuntu20.8.18-1ubuntu10.8.19-1ubuntu10.8.19-1ubuntu1.2
Show 4 moreShow less
0.8.19-1ubuntu1.30.8.19-1ubuntu1.40.8.19-1ubuntu1.50.8.19-1ubuntu1.6
0.8.19-1ubuntu1.7
irssi
SUSE:Package Hub 12
From an advisory covering 5 CVEs
 before 1.1.1-43.1
1.1.1-43.1
irssi
openSUSE:Tumbleweed
From an advisory covering 26 CVEs
 before 1.2.3-2.4
1.2.3-2.4

History

History
RecordedChangedSources
affected, facts
affectedOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-7052 is a high vulnerability (CVSS 7.5) in Irssi, published February 15, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.31%, the 83rd percentile. Fixed in irssi 1.1.1-r0.

References

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