Ubuntu Security Notice USN-5787-2 ≈ Packet Storm

Roger Wilco Alertes 9 janvier 2023 Affichages : 177

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Ubuntu Security Notice USN-5787-2^[6]: Authored by Ubuntu ^[7] | Site security.ubuntu.com ^[8]; Ubuntu Security Notice 5787-2 - USN-5787-1 fixed vulnerabilities in Libksba. This update provides the corresponding updates for Ubuntu 16.04 ESM and Ubuntu 14.04 ESM. It was discovered that Libksba incorrectly handled parsing CRL signatures. A remote attacker could use this issue to cause Libksba to crash, resulting in a denial of service, or possibly execute arbitrary code.; systems | linux ^[9], ubuntu ^[10]; advisories | CVE-2022-47629 ^[11]; SHA-256 | 82286b86067d6fc4fa31cac9d371a0b0f0692d36a900f8a50b11f9aed2f7b2c0; Download ^[12] | Favorite ^[13] | View ^[14]

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Ubuntu Security Notice USN-5787-2
January 09, 2023
libksba vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Summary:
Libksba could be made to crash or run programs if it processed specially
crafted data.
Software Description:
- libksba: X.509 and CMS support library
Details:
USN-5787-1 fixed vulnerabilities in Libksba. This update provides the
corresponding updates for Ubuntu 16.04 ESM and Ubuntu 14.04 ESM.
Original advisory details:
It was discovered that Libksba incorrectly handled parsing CRL signatures.
A remote attacker could use this issue to cause Libksba to crash, resulting
in a denial of service, or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 ESM:
libksba8                        1.3.3-1ubuntu0.16.04.1+esm2
Ubuntu 14.04 ESM:
libksba8                        1.3.0-3ubuntu0.14.04.2+esm2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5787-2
https://ubuntu.com/security/notices/USN-5787-1
CVE-2022-47629