Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.3143
nettle security update
20 September 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: nettle
Publisher: Debian
Operating System: Debian GNU/Linux
Impact/Access: Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-20305 CVE-2021-3580
Reference: ESB-2021.3141
ESB-2021.2781
ESB-2021.2657
Original Bulletin:
https://www.debian.org/lts/security/2021/dla-2760
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Debian LTS Advisory DLA-2760-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Markus Koschany
September 18, 2021 https://wiki.debian.org/LTS
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Package : nettle
Version : 3.3-1+deb9u1
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 Debian 9 stretch, these problems have been fixed in version
3.3-1+deb9u1.
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 LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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