Information Exposure Affecting python-twisted-web package, versions <0:12.1.0-5.el7_2
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Test your applications- Snyk ID SNYK-RHEL7-PYTHONTWISTEDWEB-5364942
- published 26 Mar 2023
- disclosed 7 Jun 2018
Introduced: 7 Jun 2018
CVE-2016-1000339 Open this link in a new tabHow to fix?
Upgrade RHEL:7 python-twisted-web to version 0:12.1.0-5.el7_2 or higher.
This issue was patched in RHSA-2018:2927.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python-twisted-web package and not the python-twisted-web package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
In the Bouncy Castle JCE Provider version 1.55 and earlier the primary engine class used for AES was AESFastEngine. Due to the highly table driven approach used in the algorithm it turns out that if the data channel on the CPU can be monitored the lookup table accesses are sufficient to leak information on the AES key being used. There was also a leak in AESEngine although it was substantially less. AESEngine has been modified to remove any signs of leakage (testing carried out on Intel X86-64) and is now the primary AES class for the BC JCE provider from 1.56. Use of AESFastEngine is now only recommended where otherwise deemed appropriate.
References
- https://access.redhat.com/security/cve/CVE-2016-1000339
- https://github.com/bcgit/bc-java/commit/8a73f08931450c17c749af067b6a8185abdfd2c0#diff-494fb066bed02aeb76b6c005632943f2
- https://github.com/bcgit/bc-java/commit/413b42f4d770456508585c830cfcde95f9b0e93b#diff-54656f860db94b867ba7542430cd2ef0
- https://lists.debian.org/debian-lts-announce/2018/07/msg00009.html
- https://usn.ubuntu.com/3727-1/
- https://access.redhat.com/errata/RHSA-2018:2927
- https://security.netapp.com/advisory/ntap-20181127-0004/
- https://www.oracle.com/security-alerts/cpuoct2020.html