A vulnerability classified as problematic was found in QEMU (Virtualization Software). Affected by this vulnerability is the function lsi_execute_script of the component LSI SCSI Adapter Emulator. The manipulation with an unknown input leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect availability. The summary by CVE is:

In QEMU 1:4.1-1, 1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8~deb10u1, 1:3.1+dfsg-8+deb10u2, and 1:2.1+dfsg-12+deb8u12 (fixed), when executing script in lsi_execute_script(), the LSI scsi adapter emulator advances 's->dsp' index to read next opcode. This can lead to an infinite loop if the next opcode is empty. Move the existing loop exit after 10k iterations so that it covers no-op opcodes as well.

The weakness was published 09/24/2019 (Website). The advisory is shared at lists.debian.org. This vulnerability is known as CVE-2019-12068 since 05/13/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/27/2023). MITRE ATT&CK project uses the attack technique T1499 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Productinfo

Type

• Virtualization Software

Name

• QEMU

Version

• 1:2.1+dfsg-12+deb8u6
• 1:2.1+dfsg-12+deb8u12
• 1:2.8+dfsg-6+deb9u8
• 1:3.1+dfsg-8+deb10u2
• 1:3.1+dfsg-8~deb10u1
• 1:4.1-1

License

• open-source

CPE 2.3info

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• 🔍
• 🔍

CPE 2.2info

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