Advanced Virtualization for RHEL 8 update for the virt:8.1 module
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-7039 CVE-2020-8608 |
| CWE-ID | CWE-122 CWE-119 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
Red Hat Enterprise Linux Advanced Virtualization Server applications / Virtualization software |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Heap-based buffer overflow
EUVDB-ID: #VU25458
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2020-7039
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows an attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the tcp_emu() function in tcp_subr.c in libslirp. An attacker can issue specially crafted IRC DCC commands in EMU_IRC, trigger heap-based buffer overflow and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Red Hat Enterprise Linux Advanced Virtualization: 8
CPE2.3 External linkshttps://access.redhat.com/errata/RHSA-2020:1261
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) Buffer overflow
EUVDB-ID: #VU25456
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2020-8608
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within tcp_subr.c file in libslirp. A local user can pass specially crafted data to the application that is using the affected version of library, trigger memory corruption and execute arbitrary code on the system.
Install updates from vendor's website.
Red Hat Enterprise Linux Advanced Virtualization: 8
CPE2.3 External linkshttps://access.redhat.com/errata/RHSA-2020:1261
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.
