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Vulnerabilities
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CVE-2018-0739

Updated on 27 Mar 2018

Severity

6.5 Medium severity

Details

CVSS score
6.5
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n).

Details

Affected product:
AlmaLinux 8 , AlmaLinux 9.2 ESU , Alpine Linux 3.18 ELS , CentOS 6 , CentOS 6 ELS , CentOS 7 , CentOS 7 ELS , CentOS 8 , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , CloudLinux 6 ELS , CloudLinux 7 ELS , Debian 10 , Debian 11 , Debian 12 , Debian 13 , Debian 9 , EL 7 , EL 8 , EL 9 , Oracle Linux 6 ELS , Oracle Linux 7 , Oracle Linux 7 ELS , RHEL 6 , RHEL 7 , RHEL 7 ELS , RHEL 8 , TuxCare 9.6 ESU , Ubuntu 16.04 , Ubuntu 16.04 ELS , Ubuntu 16.04 ESM , Ubuntu 18.04 , Ubuntu 18.04 ELS , Ubuntu 20.04 , Ubuntu 20.04 ELS , Ubuntu 22.04 , Ubuntu 24.04
Affected packages:
openssl @ 1.0.2k (+42 more)
Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n).

Fixes