Multiple vulnerabilities in BusyBox

Published: 2024-06-27

Risk	Low
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2023-42363 CVE-2023-42364 CVE-2023-42365 CVE-2023-42366
CWE-ID	CWE-416 CWE-122
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	BusyBox Universal components / Libraries / Software for developers
Vendor	busybox.net

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU93460

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42363

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the xasprintf() function in xfuncs_printf.c. A remote attacker can trick the victim to pass a specially crafted input to the application and crash it.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BusyBox: 1.0.0 - 1.36.1

External links

http://bugs.busybox.net/show_bug.cgi?id=15865

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Use-after-free

EUVDB-ID: #VU93459

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42364

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the evaluate() function in awk.c. A remote attacker can trick the victim to pass a specially crafted awk pattern to the application and crash it.

Mitigation

Install update from vendor's website.

Vulnerable software versions

BusyBox: 1.0.0 - 1.36.1

External links

http://bugs.busybox.net/show_bug.cgi?id=15868

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Use-after-free

EUVDB-ID: #VU93458

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42365

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error within the copyvar() function in awk.c. A remote attacker can trick the victim to pass a specially crafted awk pattern to the application and crash it.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BusyBox: 1.0.0 - 1.36.1

External links

http://bugs.busybox.net/show_bug.cgi?id=15871

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Heap-based buffer overflow

EUVDB-ID: #VU93457

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-42366

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to crash the application.

The vulnerability exists due to a boundary error within the next_token() function at awk.c. A remote attacker can trick the victim to pass a specially crafted file, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

BusyBox: 1.0.0 - 1.36.1

External links

http://bugs.busybox.net/show_bug.cgi?id=15874

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.