Gentoo update for QEMU



Published: 2020-05-13
Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-11102
CVE-2020-1711
CVE-2020-7039
CWE-ID CWE-119
CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Gentoo Linux
Operating systems & Components / Operating system

Vendor Gentoo

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU27544

Risk: High

CVSSv3.1:

CVE-ID: CVE-2020-11102

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary within hw/net/tulip.c in QEMU during the copying of tx/rx buffers because the frame size is not validated against the r/w data length. A remote attacker can  trigger memory corruption and execute arbitrary code on the target system.

Mitigation

Update the affected packages.
app-emulation/qemu to version: 4.2.0-r5

Vulnerable software versions

Gentoo Linux: All versions


CPE2.3 External links

http://security.gentoo.org/
http://security.gentoo.org/glsa/202005-02

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Heap-based buffer overflow

EUVDB-ID: #VU25510

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-1711

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to a boundary error in the way the iSCSI Block driver handles a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an "iscsi_co_block_status()" routine. A remote authenticated attacker can trigger heap-based buffer overflow and cause a denial of service condition or potentially execute arbitrary code with privileges of the QEMU process on the host.


Mitigation

Update the affected packages.
app-emulation/qemu to version: 4.2.0-r5

Vulnerable software versions

Gentoo Linux: All versions


CPE2.3 External links

http://security.gentoo.org/
http://security.gentoo.org/glsa/202005-02

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Heap-based buffer overflow

EUVDB-ID: #VU25458

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-7039

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The 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.

Mitigation

Update the affected packages.
app-emulation/qemu to version: 4.2.0-r5

Vulnerable software versions

Gentoo Linux: All versions


CPE2.3 External links

http://security.gentoo.org/
http://security.gentoo.org/glsa/202005-02

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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