CVE-2013-5546: Input Validation
First published: Thu Oct 31 2013(Updated: )
The TCP reassembly feature in Cisco IOS XE 3.7 before 3.7.3S and 3.8 before 3.8.1S on 1000 ASR devices allows remote attackers to cause a denial of service (device reload) via large TCP packets that are processed by the (1) NAT or (2) ALG component, aka Bug ID CSCud72509.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE Software | =3.7.0s | |
| Cisco IOS XE Software | =3.7.1s | |
| Cisco IOS XE Software | =3.7.2s | |
| Cisco IOS XE Software | =3.8.0s | |
| Cisco ASR 1001 | ||
| Cisco ASR 1002 Fixed Router | ||
| Cisco ASR 1002-X | ||
| Cisco ASR 1004 | ||
| Cisco ASR 1006 | ||
| Cisco ASR 1023 Router |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2013-5546?
CVE-2013-5546 has a severity rating of High due to the potential for remote denial of service attacks.
How do I fix CVE-2013-5546?
To fix CVE-2013-5546, upgrade your Cisco IOS XE software to version 3.7.3S or later, or 3.8.1S or later.
Who is affected by CVE-2013-5546?
CVE-2013-5546 affects Cisco ASR 1000 series devices running versions 3.7.0S through 3.8.0S.
What type of attack does CVE-2013-5546 allow?
CVE-2013-5546 allows attackers to cause a denial of service by sending large TCP packets that overwhelm the device.
When was CVE-2013-5546 disclosed?
CVE-2013-5546 was disclosed on October 30, 2013.
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- version/cisco ios xe software/3.7.1s
- version/cisco ios xe software/3.7.2s
- version/cisco ios xe software/3.8.0s
- canonical/cisco asr 1001
- canonical/cisco asr 1002 fixed router
- canonical/cisco asr 1002-x
- canonical/cisco asr 1004
- canonical/cisco asr 1006
- canonical/cisco asr 1023 router