CVE-2003-0795: Input Validation
First published: Tue Nov 18 2003(Updated: )
The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place when processing the SE marker, which allows remote attackers to cause a denial of service (crash) via a malformed telnet command to the telnet CLI port, which may trigger a null dereference.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Zebra | =0.91a | |
| GNU Zebra | =0.92a | |
| GNU Zebra | =0.93a | |
| GNU Zebra | =0.93b | |
| Quagga Routing Software Suite | <=0.96.3 | |
| Quagga Routing Software Suite | =0.95 | |
| Quagga Routing Software Suite | =0.96 | |
| Quagga Routing Software Suite | =0.96.1 | |
| Quagga Routing Software Suite | =0.96.2 | |
| SGI ProPack | =2.2.1 | |
| SGI ProPack | =2.3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2003-0795?
CVE-2003-0795 is classified as a denial of service vulnerability which can crash affected systems.
How do I fix CVE-2003-0795?
To fix CVE-2003-0795, you should upgrade to Quagga version 0.96.4 or later, or to a patched version of Zebra.
Which software is affected by CVE-2003-0795?
CVE-2003-0795 affects Quagga versions up to and including 0.96.3 and Zebra versions up to and including 0.93b.
What type of attack does CVE-2003-0795 enable?
CVE-2003-0795 allows remote attackers to perform a denial of service attack via malformed telnet commands.
Is CVE-2003-0795 remotely exploitable?
Yes, CVE-2003-0795 is remotely exploitable, allowing attackers to crash the service through network access.
- agent/softwarecombine
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- collector/mitre-cve
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- vendor/gnu
- canonical/gnu zebra
- version/gnu zebra/0.91a
- version/gnu zebra/0.92a
- version/gnu zebra/0.93a
- version/gnu zebra/0.93b
- vendor/quagga
- canonical/quagga routing software suite
- version/quagga routing software suite/0.96.3
- version/quagga routing software suite/0.95
- version/quagga routing software suite/0.96
- version/quagga routing software suite/0.96.1
- version/quagga routing software suite/0.96.2
- vendor/sgi
- canonical/sgi propack
- version/sgi propack/2.2.1
- version/sgi propack/2.3