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Red Hat: RHSA-2021-2758-01 Important Nettle Memory Access Issue

red hat
Calendar Grey July 15, 2021
Dist Redhat Esm H88
Urgent thistle patch released to resolve memory handling vulnerabilities. Review the notice for instructions on implementing the solution.
An update for nettle is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise L...

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

Nettle is a cryptographic library that is designed to fit easily in almost any context: In crypto toolkits for object-oriented languages, such as C++, Python, or Pike, in applications like LSH or GNUPG, or even in kernel space.
Security Fix(es):
* nettle: Out of bounds memory access in signature verification (CVE-2021-20305)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory patch important memory access redhat nettle

References

https://access.redhat.com/security/cve/CVE-2021-20305 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Server AUS (v. 7.4):
Source: nettle-2.7.1-9.el7_4.src.rpm
x86_64: nettle-2.7.1-9.el7_4.i686.rpm nettle-2.7.1-9.el7_4.x86_64.rpm nettle-debuginfo-2.7.1-9.el7_4.i686.rpm nettle-debuginfo-2.7.1-9.el7_4.x86_64.rpm nettle-devel-2.7.1-9.el7_4.i686.rpm nettle-devel-2.7.1-9.el7_4.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.4):
Source: nettle-2.7.1-9.el7_4.src.rpm
ppc64le: nettle-2.7.1-9.el7_4.ppc64le.rpm nettle-debuginfo-2.7.1-9.el7_4.ppc64le.rpm nettle-devel-2.7.1-9.el7_4.ppc64le.rpm
x86_64: nettle-2.7.1-9.el7_4.i686.rpm nettle-2.7.1-9.el7_4.x86_64.rpm nettle-debuginfo-2.7.1-9.el7_4.i686.rpm nettle-debuginfo-2.7.1-9.el7_4.x86_64.rpm nettle-devel-2.7.1-9.el7_4.i686.rpm nettle-devel-2.7.1-9.el7_4.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 7.4):
Source: nettle-2.7.1-9.el7_4.src.rpm
x86_64: nettle-2.7.1-9.el7_4.i686.rpm nettle-2.7.1-9.el7_4.x86_64.rpm nettle-debuginfo-2.7.1-9.el7_4.i686.rpm nettle-debuginfo-2.7.1-9.el7_4.x86_64.rpm nettle-devel-2.7.1-9.el7_4.i686.rpm nettle-devel-2.7.1-9.el7_4.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2758-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2758
Issue date: 2021-07-15

Topic

An update for nettle is now available for Red Hat Enterprise Linux 7.4Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended UpdateSupport, and Red Hat Enterprise Linux 7.4 Update Services for SAPSolutions.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory patch important memory access redhat nettle

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.4) - x86_64

Red Hat Enterprise Linux Server E4S (v. 7.4) - ppc64le, x86_64

Red Hat Enterprise Linux Server TUS (v. 7.4) - x86_64

Bugs Fixed

1942533 - CVE-2021-20305 nettle: Out of bounds memory access in signature verification

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