CVE-2016-4414
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote...
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.
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
What each source reports
NVD Score used
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.
- Record
CVE-2016-4414- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE List No score
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.
- Record
CVE-2016-4414- Updated
- 2026-11-02
EUVDEUVD-2016-5414 No score
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.
- Record
EUVD-2016-5414- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-r62h-rf3r-q857
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote...
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.
- Record
GHSA-r62h-rf3r-q857- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.
- Record
CVE-2016-4414- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2016-4414
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.
- Record
DEBIAN-CVE-2016-4414- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2016-4414
The onReadyRead function in core/coreauthhandler.cpp in Quassel before 0.12.4 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via invalid handshake data.
- Record
UBUNTU-CVE-2016-4414- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVMGASA-2016-0166 No score
Updated quassel packages fix CVE-2016-4414
Updated quassel packages fix security vulnerability:
It was found that quasselcore is vulnerable to a denial of service attack by unauthenticated clients. The protocol negotiation did not take into account lack of a match in handshake data, in which case PeerFactory::createPeer returns a nullptr, which is immediately dereferenced (CVE-2016-4414).
- Record
MGASA-2016-0166- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10119-1 No score
quassel-base-0.12.4-3.3 on GA media
These are all security issues fixed in the quassel-base-0.12.4-3.3 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10119-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
quasselDebian:12 |
before 1:0.12.4-2 | 1:0.12.4-2 |
quasselDebian:13 |
before 1:0.12.4-2 | 1:0.12.4-2 |
quasselDebian:14 |
before 1:0.12.4-2 | 1:0.12.4-2 |
quasselMageia:5 |
before 0.10.1-5.2.mga5 | 0.10.1-5.2.mga5 |
quasselUbuntu:16.04:LTS |
All versions, plus listed versions 0.12.2-0ubuntu10.12.2-0ubuntu1.16.04.2 |
None known |
quasselopenSUSE:Tumbleweed |
before 0.12.4-3.3 | 0.12.4-3.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-4414 is a high vulnerability (CVSS 7.5) in Quassel-irc Quassel, published May 5, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.85%, the 86th percentile. Fixed in quassel 1:0.12.4-2.
References
openwall.com/lists/oss-security/2016/04/30/4
github.com/quassel/quassel/commit/e678873
lists.opensuse.org/opensuse-updates/2016-05/msg00063.html
quassel-irc.org/node/129
lists.fedoraproject.org/pipermail/package-announce/2016-May/183746.html
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nvd.nist.gov/vuln/detail/CVE-2016-4414
security-tracker.debian.org/tracker/CVE-2016-4414
advisories.mageia.org/MGASA-2016-0166.html
bugs.mageia.org/show_bug.cgi?id=18324
ubuntu.com/security/CVE-2016-4414
cve.org/CVERecord?id=CVE-2016-4414
suse.com/security/cve/CVE-2013-4422