The blowfishECB function in core/cipher.cpp in Quassel IRC 0.10.0 allows remote attackers to cause a denial of service (out-of-bounds read)
The blowfishECB function in core/cipher.cpp in Quassel IRC 0.10.0 allows remote attackers to cause a denial of service (out-of-bounds read) via a malformed string.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Nov 6, 2014
- Updated
- Jun 16, 2026
- EPSS
- 3.6% · 89th percentile
- CWE
- CWE-125
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Report tools
Action score
21
Monitor
Low priority for now.
- CVSS
- 20 / 40 · 5.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 3.6%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| quassel-irc | quassel irc | cpe:2.3:a:quassel-irc:quassel_irc |
| opensuse | opensuse | cpe:2.3:o:opensuse:opensuse |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- canonical ubuntu linux12.04
- debian debian linux7.0
- opensuse opensuse12.3
- opensuse opensuse13.1
- opensuse opensuse13.2
- quassel-irc quassel irc0.10.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | konversation | before 1.5-2 | 1.5-2 |
| Debian:12 | quassel | before 0.10.0-2.1 | 0.10.0-2.1 |
| Debian:6.0 | konversation | before 1.3.1-2+deb6u1 | 1.3.1-2+deb6u1 |
| Debian:7 | konversation | before 1.4-1+deb7u1 | 1.4-1+deb7u1 |
| Debian:7 | quassel | before 0.8.0-1+deb7u3 | 0.8.0-1+deb7u3 |
Same product
canonical: all recordsOther highest-scoring records for the same primary product.
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- CVE-2016-4553client_side.cc in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which al58Plan
- CVE-2017-14495Memory leak in dnsmasq before 2.78, when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a55Plan
- CVE-2016-4054Buffer overflow in Squid 3.x before 3.5.17 and 4.x before 4.0.9 allows remote attackers to execute arbitrary code via crafted Edge Side Incl55Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:konversation | 1.5-2 · Debian:12 | Package registry (OSV) |
| debian:quassel | 0.10.0-2.1 · Debian:12 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- P
Weakness class (CWE)
CWE-125 · Out-of-bounds ReadCVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- bugs.quassel-irc.org/issues/1314
- lists.opensuse.org/opensuse-updates/2014-11/msg00028.html
- lists.opensuse.org/opensuse-updates/2014-11/msg00046.html
- lists.opensuse.org/opensuse-updates/2015-03/msg00068.html
- secunia.com/advisories/61932
- secunia.com/advisories/62035
- secunia.com/advisories/62261
- www.debian.org/security/2014/dsa-3063
- www.debian.org/security/2014/dsa-3068
- www.ubuntu.com/usn/USN-2401-1
- github.com/quassel/quassel/commit/8b5ecd226f9208af3074b33d3b7cf5e14f55b138
Vendor advisories and official records. Exploit/PoC links are deliberately left out.