CVE-2024-12243
ADVISORY - ubuntuSummary
A flaw was found in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption. This flaw allows a remote attacker to send a specially crafted certificate, causing GnuTLS to become unresponsive or slow, resulting in a denial-of-service condition.
Common Weakness Enumeration (CWE)
Inefficient Algorithmic Complexity
Inefficient Algorithmic Complexity
Ubuntu
3.9
CVSS SCORE
5.3mediumPackage | Type | OS Name | OS Version | Affected Ranges | Fix Versions |
---|---|---|---|---|---|
ubuntu/gnutls28 | deb | ubuntu | 22.04 | <3.7.3-4ubuntu1.6 | 3.7.3-4ubuntu1.6 |
ubuntu/gnutls28 | deb | ubuntu | 25.04 | <3.8.9-2ubuntu1 | 3.8.9-2ubuntu1 |
ubuntu/gnutls28 | deb | ubuntu | 24.10 | <3.8.6-2ubuntu1.1 | 3.8.6-2ubuntu1.1 |
ubuntu/gnutls28 | deb | ubuntu | 20.04 | <3.6.13-2ubuntu1.12 | 3.6.13-2ubuntu1.12 |
ubuntu/gnutls28 | deb | ubuntu | 24.04 | <3.8.3-1.1ubuntu3.3 | 3.8.3-1.1ubuntu3.3 |
CVSS:3 Severity and metrics
The CVSS metrics represent different qualitative aspects of a vulnerability that impact the overall score, as defined by the CVSS Specification.
The vulnerable component is bound to the network stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared physical (e.g., Bluetooth or IEEE 802.11) or logical (e.g., local IP subnet) network, or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN to an administrative network zone). One example of an Adjacent attack would be an ARP (IPv4) or neighbor discovery (IPv6) flood leading to a denial of service on the local LAN segment (e.g., CVE-2013-6014).
Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component.
The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
The vulnerable system can be exploited without interaction from any user.
An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
There is no loss of confidentiality.
There is no loss of trust or accuracy within the impacted component.
Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.
NIST
3.9
CVSS SCORE
5.3mediumDebian
-
Alma
-
CVSS SCORE
N/AmediumAmazon
-
CVSS SCORE
N/AmediumRed Hat
3.9
CVSS SCORE
5.3mediumOracle
-
CVSS SCORE
N/AmediumOracle
-