Executive Summary

Informations
Name CVE-2021-3449 First vendor Publication 2021-03-25
Vendor Cve Last vendor Modification 2021-10-20

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 5.9
Base Score 5.9 Environmental Score 5.9
impact SubScore 3.6 Temporal Score 5.9
Exploitabality Sub Score 2.2
 
Attack Vector Network Attack Complexity High
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:N/A:P)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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).

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3449

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-476 NULL Pointer Dereference

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 3
Application 3
Application 1
Application 1
Application 1
Application 1
Application 1
Application 1
Application 1
Application 1
Application 1
Application 355
Application 1
Application 3
Application 1
Application 3
Application 1
Application 1
Application 2
Application 1
Application 1
Application 2
Application 1
Application 5
Application 1
Application 1
Application 1
Application 1
Application 97
Application 5
Application 3
Os 2
Os 1
Os 3
Os 1

Sources (Detail)

Source Url
CISCO https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-s...
CONFIRM https://cert-portal.siemens.com/productcert/pdf/ssa-772220.pdf
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fb9fa6b51defd481...
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845
https://kc.mcafee.com/corporate/index?page=content&id=SB10356
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013
https://security.netapp.com/advisory/ntap-20210326-0006/
https://security.netapp.com/advisory/ntap-20210513-0002/
https://www.openssl.org/news/secadv/20210325.txt
https://www.tenable.com/security/tns-2021-05
https://www.tenable.com/security/tns-2021-06
https://www.tenable.com/security/tns-2021-09
https://www.tenable.com/security/tns-2021-10
DEBIAN https://www.debian.org/security/2021/dsa-4875
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedorapr...
GENTOO https://security.gentoo.org/glsa/202103-03
MISC https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc
https://www.oracle.com/security-alerts/cpuApr2021.html
https://www.oracle.com/security-alerts/cpuoct2021.html
MLIST http://www.openwall.com/lists/oss-security/2021/03/27/1
http://www.openwall.com/lists/oss-security/2021/03/27/2
http://www.openwall.com/lists/oss-security/2021/03/28/3
http://www.openwall.com/lists/oss-security/2021/03/28/4
https://lists.debian.org/debian-lts-announce/2021/08/msg00029.html
N/A https://www.oracle.com//security-alerts/cpujul2021.html

Alert History

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Date Informations
2021-10-20 17:23:15
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2021-09-22 00:23:16
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2021-08-31 21:23:25
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2021-08-05 01:43:12
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2021-07-21 05:23:00
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2021-07-16 05:23:01
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2021-07-14 09:23:10
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2021-07-14 00:23:00
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2021-07-13 17:23:02
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2021-06-18 00:22:56
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2021-06-17 21:23:31
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2021-06-15 00:23:03
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2021-06-03 00:23:01
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2021-05-14 00:23:03
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2021-05-12 05:22:56
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2021-05-04 14:09:53
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2021-04-22 00:23:33
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2021-04-15 13:23:16
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2021-04-02 09:23:02
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2021-04-02 05:23:07
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2021-04-02 00:23:02
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2021-03-31 21:23:24
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2021-03-29 09:23:00
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2021-03-28 13:23:01
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2021-03-28 00:22:59
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2021-03-27 12:36:13
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2021-03-27 09:23:00
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2021-03-27 05:23:02
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2021-03-26 17:22:59
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2021-03-26 12:38:49
  • First insertion