Proxygen 2015-11-09 HTTP/2 Parser Header/Trailer resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in Proxygen and classified as problematic. The affected element is an unknown function of the component HTTP2 Parser. Performing a manipulation as part of Header/Trailer results in input validation. This vulnerability is reported as CVE-2018-6347. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Proxygen (Firewall Software). It has been classified as problematic. This affects an unknown part of the component HTTP2 Parser. The manipulation as part of a Header/Trailer leads to a input validation vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. The summary by CVE is:

An issue in the Proxygen handling of HTTP2 parsing of headers/trailers can lead to a denial-of-service attack. This affects Proxygen prior to v2018.12.31.00.

The bug was discovered 12/28/2018. The weakness was disclosed 12/31/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2018-6347 since 01/26/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2018.12.31.00 eliminates this vulnerability.

The entries VDB-128606 and VDB-128604 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Proxygen 2018.12.31.00
Patch: github.com

Timelineinfo

01/26/2018 🔍
12/28/2018 +336 days 🔍
12/31/2018 +3 days 🔍
12/31/2018 +0 days 🔍
01/01/2019 +1 days 🔍
05/06/2025 +2317 days 🔍

Sourcesinfo

Advisory: 223e0aa6bc7590e86af1e917185a2e0efe160711
Status: Confirmed

CVE: CVE-2018-6347 (🔍)
GCVE (CVE): GCVE-0-2018-6347
GCVE (VulDB): GCVE-100-128607
See also: 🔍

Entryinfo

Created: 01/01/2019 12:21
Updated: 05/06/2025 22:34
Changes: 01/01/2019 12:21 (59), 04/25/2020 16:38 (1), 06/22/2023 15:54 (5), 05/06/2025 22:34 (20)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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