Apache HTTP Server up to 2.4.43 HTTP/2 Request request smuggling

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$5k-$25k0.00

A vulnerability classified as problematic has been found in Apache HTTP Server (Web Server). This affects some unknown functionality of the component HTTP2 Request Handler. The manipulation with an unknown input leads to a request smuggling vulnerability. CWE is classifying the issue as CWE-444. The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. This is going to have an impact on availability. The summary by CVE is:

Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.

The weakness was shared 08/07/2020 (Website). It is possible to read the advisory at security.gentoo.org. This vulnerability is uniquely identified as CVE-2020-9490 since 03/01/2020. 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 pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/08/2020).

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

The entries 159374, 159375 and 159376 are related to this item.

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Request smuggling
CWE: CWE-444
ATT&CK: Unknown

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

03/01/2020 🔍
08/07/2020 +159 days 🔍
08/08/2020 +1 days 🔍
11/07/2020 +91 days 🔍

Sourcesinfo

Vendor: apache.org

Advisory: security.gentoo.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-9490 (🔍)
See also: 🔍

Entryinfo

Created: 08/08/2020 10:10
Updated: 11/07/2020 13:06
Changes: 08/08/2020 10:10 (39), 08/08/2020 10:15 (18), 11/07/2020 13:06 (1)
Complete: 🔍

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