Oracle Communications Session Report Manager 8.2.0/8.2.1/8.2.2 operation on a resource after expiration

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CVSS Meta Temp Score
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CTI Interest Score
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9.0$5k-$25k0.00

A vulnerability, which was classified as very critical, was found in Oracle Communications Session Report Manager 8.2.0/8.2.1/8.2.2 (Cloud Software). CWE is classifying the issue as CWE-672. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Eclipse Jetty, versions 9.4.27.v20200227 to 9.4.29.v20200521, in case of too large response headers, Jetty throws an exception to produce an HTTP 431 error. When this happens, the ByteBuffer containing the HTTP response headers is released back to the ByteBufferPool twice. Because of this double release, two threads can acquire the same ByteBuffer from the pool and while thread1 is about to use the ByteBuffer to write response1 data, thread2 fills the ByteBuffer with other data. Thread1 then proceeds to write the buffer that now contains different data. This results in client1, which issued request1 seeing data from another request or response which could contain sensitive data belonging to client2 (HTTP session ids, authentication credentials, etc.). If the Jetty version cannot be upgraded, the vulnerability can be significantly reduced by configuring a responseHeaderSize significantly larger than the requestHeaderSize (12KB responseHeaderSize and 8KB requestHeaderSize).

The weakness was shared 10/20/2020 as Oracle Critical Patch Update Advisory - October 2020. The advisory is shared at oracle.com. This vulnerability is uniquely identified as CVE-2019-17638 since 10/16/2019. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k 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: 9.4
VulDB Meta Temp Score: 9.0

VulDB Base Score: 9.4
VulDB Temp Score: 9.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.4
NVD Vector: 🔒

CVSSv2infoedit

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

NVD Base Score: 🔒

Exploitinginfoedit

Class: Unknown (CWE-672)
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
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Timelineinfoedit

10/16/2019 CVE assigned
10/20/2020 +370 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-2019-17638 (🔒)

Entryinfoedit

Created: 10/21/2020 08:47 PM
Updated: 11/22/2020 02:46 PM
Changes: (15) vulnerability_cwe 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
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