Multiple vulnerabilities in NetBSD
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | N/A |
| CWE-ID | CWE-119 CWE-401 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software Subscribe |
NetBSD Operating systems & Components / Operating system |
| Vendor | NetBSD Foundation, Inc |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Buffer overflow
EUVDB-ID: #VU18387
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: N/A
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a local user to execute arbitrary code on the target system withe elevated privileges.
The vulnerability exists due to a boundary error when validating arguments in mq_send(3) system call. A local unprivileged user can create a specially crafted application, run it on the affected system, trigger memory corruption and overwrite kernel memory.
Mitigation
Install updates from vendor's website.
Vulnerable software versionsNetBSD: 7.0.2 - 8.0
External linkshttp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2019-002.txt.asc
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.
2) Memory leak
EUVDB-ID: #VU18388
Risk: Low
CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]
CVE-ID: N/A
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to sensitive kernel information.
The vulnerability exists due memory leak within the SIOCGIFCONF IOCTL command. A local user can read huge amount of kernel memory, including pointers to bypass KASLR, stack canaries which can be used to exploit stack buffer overflows.
MitigationInstall updates from vendor's website.
Vulnerable software versionsNetBSD: 7.0.2 - 8.0
External linkshttp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2019-003.txt.asc
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. However, proof of concept for this vulnerability is available.
