CVE-2021-23840

high

Description

Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).

References

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=9b1129239f3ebb1d1c98ce9ed41d5c9476c47cb2

https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=6a51b9e1d0cf0bf8515f7201b68fb0a3482b3dc1

https://www.openssl.org/news/secadv/20210216.txt

https://www.debian.org/security/2021/dsa-4855

https://security.netapp.com/advisory/ntap-20210219-0009/

https://www.tenable.com/security/tns-2021-03

https://security.gentoo.org/glsa/202103-03

https://www.tenable.com/security/tns-2021-09

https://www.tenable.com/security/tns-2021-10

https://www.oracle.com/security-alerts/cpuApr2021.html

https://lists.apache.org/thread.html/[email protected]%3Cissues.bookkeeper.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cissues.bookkeeper.apache.org%3E

https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846

https://www.oracle.com//security-alerts/cpujul2021.html

https://www.oracle.com/security-alerts/cpuoct2021.html

https://kc.mcafee.com/corporate/index?page=content&id=SB10366

https://www.oracle.com/security-alerts/cpujan2022.html

https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf

https://www.oracle.com/security-alerts/cpuapr2022.html

Details

Source: MITRE

Published: 2021-02-16

Updated: 2022-05-12

Type: CWE-190

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH