CVE-2024-7558: 
Linux openSUSE vulnerability analysis and mitigation

JUJUCONTEXTID vulnerability (CVE-2024-7558) is a security flaw discovered in Juju, affecting versions ≤ 3.5.3, ≤ 3.4.5, ≤ 3.3.6, ≤ 3.2.4, ≤ 3.1.9, and ≤ 2.9.50. The vulnerability involves a predictable authentication secret that can be exploited by an unprivileged user in the same network namespace to gain unauthorized access to sensitive information and tools (GitHub Advisory).

The vulnerability stems from the predictable nature of the JUJUCONTEXTID authentication measure used on the unit hook tool abstract domain socket. The JUJUCONTEXTID consists of several components: the application name, unit number, current hook being run, and a uint63 decimal number. The critical weakness lies in the random number generation, which uses a non-cryptographically secure random source from the Go standard library, with the current Unix time in seconds at startup as the seed. The vulnerability has received a CVSS v3.1 Base Score of 8.7 (High) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H (GitHub Advisory).

When exploited, this vulnerability allows an unprivileged user in the same network namespace to connect to an abstract domain socket and guess the JUJUCONTEXTID value. This access grants the attacker the same privileges as the Juju charm, potentially exposing secrets that could provide broader system access (GitHub Advisory).

No workaround is available for this vulnerability. The only solution is to upgrade to the patched versions: 3.5.4, 3.4.6, 3.3.7, 3.1.10, or 2.9.51 (GitHub Advisory).