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OVAL Definitions
>
OVAL Definition Details
Id
oval:com.altx-soft.nix:def:148527
[Rus]
Version
3
Class
patch
ALTXid
349954
Language
English
Severity
Medium
Title
DSA-4875-1 -- openssl -- security update
Description
A NULL pointer dereference was found in the signature_algorithms processing in OpenSSL, a Secure Sockets Layer toolkit, which could result in denial of service.
Family
unix
Platform
Debian 10
Product
openssl
Reference
VENDOR: DSA-4875-1
VENDOR: DSA-4875-1
Id:
DSA-4875-1
Reference:
https://www.debian.org/security/dsa-4875
CVE: CVE-2021-3449
CVE: CVE-2021-3449
Id:
CVE-2021-3449
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3449
Comment
: An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).
CVSSv2 Score:
4.3
Access vector:
NETWORK
Access complexity:
MEDIUM
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSSv3 Score:
5.9
Attack vector:
NETWORK
Attack complexity:
HIGH
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
HIGH
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE:
476 (NULL Pointer Dereference)
References:
https://www.openssl.org/news/secadv/20210325.txt (CONFIRM)
20210325 Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: March 2021 (CISCO)
DSA-4875 (DEBIAN)
https://security.netapp.com/advisory/ntap-20210326-0006/ (CONFIRM)
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc (MISC)
[oss-security] 20210327 OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing (MLIST)
[oss-security] 20210327 Re: OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing (MLIST)
[oss-security] 20210328 Re: OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing (MLIST)
[oss-security] 20210328 Re: OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing (MLIST)
GLSA-202103-03 (GENTOO)
https://www.tenable.com/security/tns-2021-06 (CONFIRM)
https://www.tenable.com/security/tns-2021-05 (CONFIRM)
https://kc.mcafee.com/corporate/index?page=content&id=SB10356 (CONFIRM)
https://www.tenable.com/security/tns-2021-09 (CONFIRM)
https://security.netapp.com/advisory/ntap-20210513-0002/ (CONFIRM)
https://www.tenable.com/security/tns-2021-10 (CONFIRM)
https://www.oracle.com/security-alerts/cpuApr2021.html (MISC)
https://cert-portal.siemens.com/productcert/pdf/ssa-772220.pdf (CONFIRM)
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845 (CONFIRM)
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013 (CONFIRM)
N/A (N/A)
[debian-lts-announce] 20210831 [SECURITY] [DLA 2751-1] postgresql-9.6 security update (MLIST)
https://www.oracle.com/security-alerts/cpuoct2021.html (MISC)
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf (CONFIRM)
https://www.oracle.com/security-alerts/cpuapr2022.html (MISC)
N/A (N/A)
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=fb9fa6b51defd48157eeb207f52181f735d96148 ()
FEDORA-2021-cbf14ab8f9 ()
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