Bug 2041818 (CVE-2020-36476) - CVE-2020-36476 mbedtls: missing zeroization of plaintext buffers in mbedtls_ssl_read
Summary: CVE-2020-36476 mbedtls: missing zeroization of plaintext buffers in mbedtls_s...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-36476
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2041820 2041821
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-01-18 10:43 UTC by Dhananjay Arunesh
Modified: 2022-01-18 11:30 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2022-01-18 11:30:47 UTC
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Description Dhananjay Arunesh 2022-01-18 10:43:21 UTC 
An issue was discovered in Mbed TLS before 2.24.0 (and before 2.16.8 LTS and before 2.7.17 LTS). There is missing zeroization of plaintext buffers in mbedtls_ssl_read to erase unused application data from memory.

References:
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17
Comment 1 Dhananjay Arunesh 2022-01-18 10:43:40 UTC 
Created mbedtls tracking bugs for this issue:

Affects: epel-all [bug 2041821]
Affects: fedora-all [bug 2041820]
Comment 2 Product Security DevOps Team 2022-01-18 11:30:45 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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