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CVE-2015-4293

UnknownEPSS 1.81%

Last modified

CVE-2015-4293 is a vulnerability of currently unknown severity. The packet-reassembly implementation in Cisco IOS XE 3.13S and earlier allows remote attackers to cause a denial of service (CPU consumption or packet loss) via fragmented (1) IPv4 or (2) IPv6 packets that trigger ATTN-3-SYNC_TIMEOUT errors after reassembly failures, aka Bug ID CSCuo37957.. EPSS estimates a 1.81% chance of exploitation in the next 30 days.

Description

The packet-reassembly implementation in Cisco IOS XE 3.13S and earlier allows remote attackers to cause a denial of service (CPU consumption or packet loss) via fragmented (1) IPv4 or (2) IPv6 packets that trigger ATTN-3-SYNC_TIMEOUT errors after reassembly failures, aka Bug ID CSCuo37957.

Metrics

EPSS Probability
1.81%

75.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xe2.1.0
CiscoIos Xe2.1.1
CiscoIos Xe2.1.2
CiscoIos Xe2.2.1
CiscoIos Xe2.2.2
CiscoIos Xe2.2.3
CiscoIos Xe2.3.0
CiscoIos Xe2.3.0t
CiscoIos Xe2.3.1t
CiscoIos Xe2.3.2
CiscoIos Xe2.4.0
CiscoIos Xe2.4.1
CiscoIos Xe2.5.0
CiscoIos Xe2.5.1
CiscoIos Xe2.5.2
CiscoIos Xe2.6.0
CiscoIos Xe2.6.1
CiscoIos Xe2.6.2
CiscoIos Xe3.10s.0
CiscoIos Xe3.10s.0a
CiscoIos Xe3.10s.1
CiscoIos Xe3.10s.2
CiscoIos Xe3.10s.3
CiscoIos Xe3.11s.0
CiscoIos Xe3.11s.1
CiscoIos Xe3.11s.2
CiscoIos Xe3.12s.0
CiscoIos Xe3.12s.1
CiscoIos Xe3.13s.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-4293?
The packet-reassembly implementation in Cisco IOS XE 3.13S and earlier allows remote attackers to cause a denial of service (CPU consumption or packet loss) via fragmented (1) IPv4 or (2) IPv6 packets that trigger ATTN-3-SYNC_TIMEOUT errors after reassembly failures, aka Bug ID CSCuo37957.
How severe is CVE-2015-4293?
Severity scoring for CVE-2015-4293 is pending analysis. The EPSS model estimates a 1.81% probability of exploitation in the next 30 days.
How do I fix CVE-2015-4293?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-4293?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST