Bug 1875047 (CVE-2020-16150) - CVE-2020-16150 mbedtls: local side channel attack on classical CBC decryption in (D)TLS
Summary: CVE-2020-16150 mbedtls: local side channel attack on classical CBC decryption...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-16150
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: 1875048 1875049
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-09-02 20:35 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-09-03 01:17 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-09-03 01:17:44 UTC
Embargoed:

Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2020-09-02 20:35:28 UTC 
A Lucky 13 timing side channel in mbedtls_ssl_decrypt_buf in library/ssl_msg.c in Trusted Firmware Mbed TLS through 2.23.0 allows an attacker to recover secret key information. This affects CBC mode because of a computed time difference based on a padding length.

References:
https://tls.mbed.org/tech-updates/security-advisories
https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2020-09-1
Comment 1 Guilherme de Almeida Suckevicz 2020-09-02 20:35:46 UTC 
Created mbedtls tracking bugs for this issue:

Affects: epel-all [bug 1875048]
Affects: fedora-all [bug 1875049]
Comment 2 Product Security DevOps Team 2020-09-03 01:17:44 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.
Note You need to log in before you can comment on or make changes to this bug.