ESB-2021.2187 – [Debian] nettle: Multiple vulnerabilities

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AUSCERT External Security Bulletin Redistribution

ESB-2021.2187
nettle security update
21 June 2021

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AusCERT Security Bulletin Summary
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Product: nettle
Publisher: Debian
Operating System: Debian GNU/Linux
Impact/Access: Provide Misleading Information — Remote/Unauthenticated
Denial of Service — Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-20305 CVE-2021-3580

Reference: ESB-2021.2166
ESB-2021.2160
ESB-2021.1994

Original Bulletin:
http://www.debian.org/security/2021/dsa-4933

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Debian Security Advisory DSA-4933-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
June 18, 2021 https://www.debian.org/security/faq
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Package : nettle
CVE ID : CVE-2021-3580 CVE-2021-20305
Debian Bug : 985652 989631

Multiple vulnerabilities were discovered in nettle, a low level
cryptographic library, which could result in denial of service (remote
crash in RSA decryption via specially crafted ciphertext, crash on ECDSA
signature verification) or incorrect verification of ECDSA signatures.

For the stable distribution (buster), these problems have been fixed in
version 3.4.1-1+deb10u1.

We recommend that you upgrade your nettle packages.

For the detailed security status of nettle please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/nettle

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT’s members. As
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NOTE: This is only the original release of the security bulletin. It may
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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