Risk | Low |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2020-16127 CVE-2020-16126 |
CWE-ID | CWE-835 CWE-264 |
Exploitation vector | Local |
Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. |
Vulnerable software Subscribe |
accountsservice (Ubuntu package) Operating systems & Components / Operating system package or component |
Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU48379
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-16127
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in the "is_in_pam_environment" function. A local user can trigger an infinite loop by creating a symlink to "/dev/zero" and cause denial of service conditions.
MitigationInstall updates from vendor's website.
Vulnerable software versionsaccountsservice (Ubuntu package): 0.6.1-1 - 0.6.55-0ubuntu12~20.04.1
External linkshttp://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU48380
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-16126
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to the affected software improperly drops the RUID. A local user can send signals to accountsservice and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsaccountsservice (Ubuntu package): 0.6.1-1 - 0.6.55-0ubuntu12~20.04.1
External linkshttp://securitylab.github.com/advisories/GHSL-2020-187-accountsservice-drop-privs-DOS
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.