Debian update for qemu
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2018-20815 CVE-2019-13164 CVE-2019-14378 |
| CWE-ID | CWE-119 CWE-284 CWE-122 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
qemu (Debian package) Operating systems & Components / Operating system package or component |
| Vendor | Debian |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Buffer overflow
EUVDB-ID: #VU19189
Risk: Medium
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-20815
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the deprecated "load_image" function, as defined in the "device_tree.c" file. A remote attacker can submit a large image file to the affected system, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate qemu package to version 1:2.8+dfsg-6+deb9u8.
Vulnerable software versionsqemu (Debian package): 1:2.8+dfsg-6+deb9u1 - 1:2.8+dfsg-6+deb9u7
External linkshttp://www.debian.org/security/2019/dsa-4506
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Improper access control
EUVDB-ID: #VU19054
Risk: Low
CVSSv3.1: 2.2 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-13164
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to gain unauthorized access to sensitive information.
The vulnerability exists due to qemu-bridge-helper.c does not ensure that a network interface name (obtained from bridge.conf or a --br=bridge option) is limited to the IFNAMSIZ size. A local attacker can create a tap device and attach it to a denied bridge interface, bypass the Access Control List (ACL) and get access to confidential data transmitted on the bridge.
Mitigation
Update qemu package to version 1:2.8+dfsg-6+deb9u8.
Vulnerable software versionsqemu (Debian package): 1:2.8+dfsg-6+deb9u1 - 1:2.8+dfsg-6+deb9u7
External linkshttp://www.debian.org/security/2019/dsa-4506
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.
3) Heap-based buffer overflow
EUVDB-ID: #VU20446
Risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]
CVE-ID: CVE-2019-14378
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the ip_reass() function in ip_input.c in libslirp. A remote authenticated attacker can send a large packet, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate qemu package to version 1:2.8+dfsg-6+deb9u8.
Vulnerable software versionsqemu (Debian package): 1:2.8+dfsg-6+deb9u1 - 1:2.8+dfsg-6+deb9u7
External linkshttp://www.debian.org/security/2019/dsa-4506
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
