CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.3 | $5k-$25k | 0.00 |
A vulnerability has been found in Apache HTTP Server (Web Server) and classified as critical. This vulnerability affects an unknown function of the component mod_http2. The manipulation with an unknown input leads to a request smuggling vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:
Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.
The weakness was released 08/07/2020 (Website). The advisory is shared for download at security.gentoo.org. This vulnerability was named CVE-2020-11993 since 04/21/2020. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/08/2020).
It is possible to mitigate the problem by applying the configuration setting .
Entries connected to this vulnerability are available at 159374, 159375 and 159399.
Product
Type
Vendor
Name
Version
- 2.4.20
- 2.4.21
- 2.4.22
- 2.4.23
- 2.4.24
- 2.4.25
- 2.4.26
- 2.4.27
- 2.4.28
- 2.4.29
- 2.4.30
- 2.4.31
- 2.4.32
- 2.4.33
- 2.4.34
- 2.4.35
- 2.4.36
- 2.4.37
- 2.4.38
- 2.4.39
- 2.4.40
- 2.4.41
- 2.4.42
- 2.4.43
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.5VulDB Meta Temp Score: 7.4
VulDB Base Score: 7.5
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.5
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Request smugglingCWE: CWE-444
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: ConfigStatus: 🔍
0-Day Time: 🔍
Timeline
04/21/2020 🔍08/07/2020 🔍
08/08/2020 🔍
11/07/2020 🔍
Sources
Vendor: apache.orgAdvisory: security.gentoo.org
Status: Not defined
Confirmation: 🔍
CVE: CVE-2020-11993 (🔍)
See also: 🔍
Entry
Created: 08/08/2020 09:55Updated: 11/07/2020 12:42
Changes: 08/08/2020 09:55 (40), 08/08/2020 10:00 (18), 11/07/2020 12:42 (1)
Complete: 🔍
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