linux.oracle.com Open in urlscan Pro
2a02:26f0:7100:184::a15  Public Scan

Form analysis
0 forms found in the DOM

Text Content

Oracle
 * ULN
 * Support
 * Documentation
 * Downloads

STAY CONNECTED:

 * Facebook
 * Twitter
 * LinkedIn
 * YouTube
 * Blog


CVE-2022-0778

 * ULN > 
 * Oracle Linux CVE repository  > 
 * CVE-2022-0778


CVE DETAILS

Release Date:2022-03-15


DESCRIPTION


The BN_mod_sqrt() function, which computes a modular square root, contains a bug
that can cause it to loop forever for non-prime moduli. Internally this function
is used when parsing certificates that contain elliptic curve public keys in
compressed form or explicit elliptic curve parameters with a base point encoded
in compressed form. It is possible to trigger the infinite loop by crafting a
certificate that has invalid explicit curve parameters. Since certificate
parsing happens prior to verification of the certificate signature, any process
that parses an externally supplied certificate may thus be subject to a denial
of service attack. The infinite loop can also be reached when parsing crafted
private keys as they can contain explicit elliptic curve parameters. Thus
vulnerable situations include: - TLS clients consuming server certificates - TLS
servers consuming client certificates - Hosting providers taking certificates or
private keys from customers - Certificate authorities parsing certification
requests from subscribers - Anything else which parses ASN.1 elliptic curve
parameters Also any other applications that use the BN_mod_sqrt() where the
attacker can control the parameter values are vulnerable to this DoS issue. In
the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of
the certificate which makes it slightly harder to trigger the infinite loop.
However any operation which requires the public key from the certificate will
trigger the infinite loop. In particular the attacker can use a self-signed
certificate to trigger the loop during verification of the certificate
signature. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was
addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in
OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected
1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).

See more information about CVE-2022-0778 from MITRE CVE dictionary and NIST NVD



CVSS V3.0 METRICS


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and
subject to review.

Base Score: 7.5 Base Metrics: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Access Vector:
Network Attack Complexity: Low Privileges Required: None User Interaction: None
Scope: Unchanged Confidentiality Impact: None Integrity Impact: None
Availability Impact: High



ERRATA INFORMATION


PlatformErrataRelease Date Oracle Linux version 6
(openssl)ELSA-2022-92462022-03-24Oracle Linux version 6
(openssl)ELSA-2022-92722022-04-08Oracle Linux version 7
(openssl)ELSA-2022-10662022-03-29Oracle Linux version 7
(openssl)ELSA-2022-92242022-03-18Oracle Linux version 7
(openssl)ELSA-2022-92252022-03-18Oracle Linux version 7
(openssl)ELSA-2022-92372022-03-21Oracle Linux version 7
(openssl)ELSA-2022-92492022-03-30Oracle Linux version 7
(openssl)ELSA-2022-92552022-03-31Oracle Linux version 8
(compat-openssl10)ELSA-2022-53262022-07-01Oracle Linux version 8
(openssl)ELSA-2022-10652022-03-28Oracle Linux version 8
(openssl)ELSA-2022-92332022-03-23Oracle Linux version 8
(openssl)ELSA-2022-92432022-03-23Oracle Linux version 8
(openssl)ELSA-2022-92582022-03-31Oracle Linux version 9
(compat-openssl11)ELSA-2022-48992022-06-30Oracle VM version 3
(openssl)OVMSA-2023-00122023-05-04




This page is generated automatically and has not been checked for errors or
omissions. For clarification or corrections please contact the Oracle Linux ULN
team


TECHNICAL INFORMATION

 * Oracle Linux Certified Hardware
 * Oracle Linux Supported Releases


ORACLE LINUX SUPPORT

 * Oracle Linux Support
 * Oracle Premier Support for Systems
 * Advanced Customer Services


CONNECT

 * Facebook
 * Twitter
 * LinkedIn
 * YouTube
 * Blog


CONTACT US

 * Global contacts
 * Oracle 1-800-633-0691

Subscribe | Careers | Contact Us | Legal Notices | Terms of Use | Your Privacy
Rights