CVE-2014-7997
First published: Sat Nov 15 2014(Updated: )
The DHCP implementation in Cisco IOS on Aironet access points does not properly handle error conditions with short leases and unsuccessful lease-renewal attempts, which allows remote attackers to cause a denial of service (device restart) by triggering a transition into a recovery state that was intended to involve a network-interface restart but actually involves a full device restart, aka Bug ID CSCtn16281.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS | ||
| Cisco Aironet 1040 | ||
| Cisco Aironet 1140 | ||
| Cisco Aironet 1260 | ||
| Cisco Aironet 3500 | ||
| Cisco Aironet 3600e | ||
| Cisco Aironet 3600 | ||
| Cisco Aironet 3600 | ||
| Cisco Aironet 3600 | ||
| Cisco Aironet 600 OfficeExtend | ||
| Cisco Aironet AP1100 | ||
| Cisco Aironet AP Software Major | ||
| Cisco Aironet AP1131 | ||
| Cisco Aironet AP1200 | ||
| Cisco Aironet AP1230AG | ||
| Cisco Aironet AP1240AG | ||
| Cisco Aironet AP1240 | ||
| Cisco Aironet AP1300 | ||
| Cisco Aironet AP1400 | ||
| Cisco Aironet AP340 | ||
| Cisco Aironet AP340 | =11.21 | |
| Cisco Aironet AP350 | ||
| Cisco Aironet AP350 | =11.21 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2014-7997?
The severity of CVE-2014-7997 is classified as high due to its potential to cause denial of service by triggering device restarts.
How do I fix CVE-2014-7997?
To fix CVE-2014-7997, update the Cisco IOS to the latest version that addresses this vulnerability.
Which Cisco products are affected by CVE-2014-7997?
CVE-2014-7997 affects Cisco IOS running on various Aironet access points.
What type of attack does CVE-2014-7997 facilitate?
CVE-2014-7997 allows remote attackers to conduct a denial of service attack by exploiting DHCP lease handling.
Is CVE-2014-7997 remotely exploitable?
Yes, CVE-2014-7997 can be exploited remotely without authentication.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/last-modified-date
- agent/weakness
- agent/author
- agent/severity
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/cisco
- canonical/cisco ios
- canonical/cisco aironet 1040
- canonical/cisco aironet 1140
- canonical/cisco aironet 1260
- canonical/cisco aironet 3500
- canonical/cisco aironet 3600e
- canonical/cisco aironet 3600
- canonical/cisco aironet 600 officeextend
- canonical/cisco aironet ap1100
- canonical/cisco aironet ap software major
- canonical/cisco aironet ap1131
- canonical/cisco aironet ap1200
- canonical/cisco aironet ap1230ag
- canonical/cisco aironet ap1240ag
- canonical/cisco aironet ap1240
- canonical/cisco aironet ap1300
- canonical/cisco aironet ap1400
- canonical/cisco aironet ap340
- version/cisco aironet ap340/11.21
- canonical/cisco aironet ap350
- version/cisco aironet ap350/11.21