Ubuntu SSSD Vulnerabilities in Ubuntu Lead to Potential Denial of Service
Article Content
- •Two vulnerabilities in SSSD affect Ubuntu 22.04, 24.04, and 26.04 LTS.
- •One vulnerability allows denial of service via smartcard or Yubikey manipulation.
- •Another vulnerability involves improper validation of authentication token lengths.
Recent vulnerabilities in the System Security Services Daemon (SSSD) have been identified in Ubuntu versions 22.04, 24.04, and 26.04 LTS. The first vulnerability allows a physically proximate attacker to crash SSSD through manipulation of smartcards or Yubikeys, affecting user login capabilities. The second vulnerability involves improper validation of authentication token lengths, which could also lead to SSSD crashes and denial of service. Users of affected systems are advised to update their packages to the latest versions to mitigate these risks. The vulnerabilities have been assigned USN-8672-1 and USN-8718-1 respectively. After applying updates, a restart of SSSD is required to implement the changes. No active exploitation has been reported yet, but the vulnerabilities pose significant risks to system availability.
Ask AI about this cluster
Answers cite the sources they use
Timeline
More articles in this cluster (3)
Following this threat?
Track Ubuntu in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.
Free account · no card needed
Continue Reading
Critical BeyondTrust 9.3 Vulnerability Actively Exploited by Threat Actor A critical vulnerability (CVE-2026-102764) in BeyondTrust Remote Support has been discovered and is actively being exploited by the threat group ARMORY CASTLE, reportedly linked to China. The vulnerability, which has a CVSS score of 9.3, allows unauthenticated attackers to upload files and potentially compromise host… 
Korean-speaking Hackers Target PHP Vulnerabilities in Global Campaign A cybersecurity report from Cyfirma reveals that attackers, possibly linked to North Korea's Lazarus group, are preparing to exploit critical vulnerabilities in PHP (CVE-2026-109618 and CVE-2026-109619). These vulnerabilities allow unauthenticated remote code execution, posing a significant threat to government…