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centosCentOS ProjectCESA-2021:3798
HistoryNov 17, 2021 - 2:51 p.m.

openssl security update

2021-11-1714:51:29
CentOS Project
lists.centos.org
246
openssl
ssl
tls
cryptography
integer overflow
null pointer

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.008

Percentile

82.3%

JSON

CentOS Errata and Security Advisory CESA-2021:3798

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

  • openssl: integer overflow in CipherUpdate (CVE-2021-23840)

  • openssl: NULL pointer dereference in X509_issuer_and_serial_hash() (CVE-2021-23841)

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.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2021-November/086175.html

Affected packages:
openssl
openssl-devel
openssl-libs
openssl-perl
openssl-static

Upstream details at:
https://access.redhat.com/errata/RHSA-2021:3798

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CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.008

Percentile

82.3%

JSON
Related for CESA-2021:3798
nessus69openvas42osv11altlinux2oraclelinux5mageia1ibm30almalinux2redhat3cloudfoundry1freebsd_advisory1suse2amazon4rocky2debian4ubuntu1archlinux1freebsd1aix1gentoo1photon1github1githubexploit2ubuntucve2openssl1redhatcve2cvelist1f51cloudlinux1veracode1nvd1vulnrichment1