CVE-2015-6271
First published: Mon Aug 31 2015(Updated: )
Cisco IOS XE 2.1.0 through 2.4.3 and 2.5.0 on ASR 1000 devices, when NAT Application Layer Gateway is used, allows remote attackers to cause a denial of service (Embedded Services Processor crash) via a crafted SIP packet, aka Bug IDs CSCta74749 and CSCta77008.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS XE Software | =2.1.0 | |
| Cisco IOS XE Software | =2.1.1 | |
| Cisco IOS XE Software | =2.1.2 | |
| Cisco IOS XE Software | =2.1.3 | |
| Cisco IOS XE Software | =2.2.1 | |
| Cisco IOS XE Software | =2.2.2 | |
| Cisco IOS XE Software | =2.2.3 | |
| Cisco IOS XE Software | =2.3.0 | |
| Cisco IOS XE Software | =2.3.0t | |
| Cisco IOS XE Software | =2.3.1t | |
| Cisco IOS XE Software | =2.3.2 | |
| Cisco IOS XE Software | =2.4.0 | |
| Cisco IOS XE Software | =2.4.1 | |
| Cisco IOS XE Software | =2.4.2 | |
| Cisco IOS XE Software | =2.4.3 | |
| Cisco IOS XE Software | =2.5.0 | |
| Cisco ASR 1001 | ||
| Cisco ASR 1001-X | ||
| Cisco ASR 1002 Fixed Router | ||
| Cisco ASR 1002-X | ||
| Cisco ASR 1004 | ||
| Cisco ASR 1006 | ||
| Cisco ASR 1013 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2015-6271?
CVE-2015-6271 has a high severity rating as it allows remote attackers to cause a denial of service.
How do I fix CVE-2015-6271?
To mitigate CVE-2015-6271, upgrade to a non-vulnerable version of Cisco IOS XE that is higher than 2.5.0.
Which Cisco devices are affected by CVE-2015-6271?
Cisco IOS XE versions from 2.1.0 to 2.4.3 and 2.5.0 on ASR 1000 devices are affected by CVE-2015-6271.
What type of attack is associated with CVE-2015-6271?
CVE-2015-6271 is exploited via crafted SIP packets aimed at causing an Embedded Services Processor crash.
Is there a known workaround for CVE-2015-6271?
There is no specific workaround for CVE-2015-6271; updating to a secure version is the recommended action.
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- version/cisco ios xe software/2.1.0
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- version/cisco ios xe software/2.2.2
- version/cisco ios xe software/2.2.3
- version/cisco ios xe software/2.3.0
- version/cisco ios xe software/2.3.0t
- version/cisco ios xe software/2.3.1t
- version/cisco ios xe software/2.3.2
- version/cisco ios xe software/2.4.0
- version/cisco ios xe software/2.4.1
- version/cisco ios xe software/2.4.2
- version/cisco ios xe software/2.4.3
- version/cisco ios xe software/2.5.0
- canonical/cisco asr 1001
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