Oracle Communications Session Border Controller 8.3/8.4 System denial of service

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CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability has been found in Oracle Communications Session Border Controller 8.3/8.4 (Cloud Software) and classified as critical. Affected by this vulnerability is some unknown functionality of the component System. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. As an impact it is known to affect availability. The summary by CVE is:

In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.

The weakness was shared 10/20/2020 as Oracle Critical Patch Update Advisory - October 2020. It is possible to read the advisory at oracle.com. This vulnerability is known as CVE-2020-11080 since 03/30/2020. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/22/2020).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

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VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

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VulDB Base Score: 🔒
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Exploitinginfoedit

Class: Denial of service (CWE-404)
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Recommended: Upgrade
Status: 🔍

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Timelineinfoedit

03/30/2020 CVE assigned
10/20/2020 +204 days Advisory disclosed
10/20/2020 +0 days Countermeasure disclosed
10/21/2020 +1 days VulDB entry created
11/22/2020 +32 days VulDB last update

Sourcesinfoedit

Vendor: https://www.oracle.com

Advisory: Oracle Critical Patch Update Advisory - October 2020
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2020-11080 (🔒)

Entryinfoedit

Created: 10/21/2020 08:47 PM
Updated: 11/22/2020 04:14 PM
Changes: (15) vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai source_cve_cna
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