F5 BIG-IP up to 11.6.4 iRules HTTP Header input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$5k-$25k0.00

Summaryinfo

A vulnerability has been found in F5 BIG-IP up to 11.6.4 and classified as problematic. This affects an unknown part of the component iRules Handler. The manipulation as part of HTTP Header leads to input validation. This vulnerability is referenced as CVE-2019-6631. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in F5 BIG-IP up to 11.6.4 (Firewall Software). This issue affects an unknown part of the component iRules Handler. The manipulation as part of a HTTP Header leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

On BIG-IP 11.5.1-11.6.4, iRules performing HTTP header manipulation may cause an interruption to service when processing traffic handled by a Virtual Server with an associated HTTP profile, in specific circumstances, when the requests do not strictly conform to RFCs.

The weakness was published 07/03/2019 (Website). It is possible to read the advisory at support.f5.com. The identification of this vulnerability is CVE-2019-6631 since 01/22/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/17/2023).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-137319, VDB-137318, VDB-137317 and VDB-137316. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.8

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/22/2019 🔍
07/03/2019 +162 days 🔍
07/04/2019 +1 days 🔍
10/17/2023 +1566 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K19501795
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-6631 (🔍)
GCVE (CVE): GCVE-0-2019-6631
GCVE (VulDB): GCVE-100-137315
SecurityFocus: 109119

See also: 🔍

Entryinfo

Created: 07/04/2019 11:31
Updated: 10/17/2023 09:50
Changes: 07/04/2019 11:31 (57), 07/01/2020 08:03 (1), 10/17/2023 09:50 (4)
Complete: 🔍
Cache ID: 216::103

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