ESB-2019.0116 - [Win][UNIX/Linux] Irssi: Denial of service - Remote with user interaction - 2019-01-11


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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0116
                 IRSSI-SA-2019-01 Irssi Security Advisory
                              11 January 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Irssi
Publisher:         Irssi
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-5882  

Original Bulletin: 
   https://irssi.org/security/irssi_sa_2019_01.txt

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IRSSI-SA-2019-01 Irssi Security Advisory [1]
============================================
CVE-2019-5882

Description
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(a) Use after free when hidden lines were expired from the scroll
    buffer. (CWE-417, CWE-825)

    CVE-2019-5882 [2] was assigned to this issue.


Impact
- ------

May affect the stability of Irssi.


Affected versions
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(a) Irssi 1.1.0 and later


Fixed in
- --------

Irssi 1.1.2


Recommended action
- ------------------

Upgrade to Irssi 1.1.2. Irssi 1.1.2 is a maintenance release in the 1.1
series, without any new features.

After installing the updated packages, one can issue the /upgrade
command to load the new binary. TLS connections will require /reconnect.


Mitigating facts
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(a) If lines are never hidden (no usage of /window hidelevel), this bug
    will not trigger.



References
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[1] https://irssi.org/security/irssi_sa_2019_01.txt
[2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5882

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