Amazon Linux AMI update for vim

Published: 2023-03-23

Risk	High
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2023-0288 CVE-2023-0433 CVE-2023-0512 CVE-2023-1127
CWE-ID	CWE-122 CWE-369
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Amazon Linux AMI Operating systems & Components / Operating system vim Operating systems & Components / Operating system package or component
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU71560

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0288

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

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 error within the ml_append_int() function in memline.c. A remote attacker can trick the victim to open a specially crafted file, trigger a 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.

Mitigation

Update the affected packages:

i686:
    vim-enhanced-9.0.1367-1.73.amzn1.i686
    vim-minimal-9.0.1367-1.73.amzn1.i686
    vim-common-9.0.1367-1.73.amzn1.i686
    vim-debuginfo-9.0.1367-1.73.amzn1.i686

noarch:
    vim-data-9.0.1367-1.73.amzn1.noarch
    vim-filesystem-9.0.1367-1.73.amzn1.noarch

src:
    vim-9.0.1367-1.73.amzn1.src

x86_64:
    vim-enhanced-9.0.1367-1.73.amzn1.x86_64
    vim-minimal-9.0.1367-1.73.amzn1.x86_64
    vim-debuginfo-9.0.1367-1.73.amzn1.x86_64
    vim-common-9.0.1367-1.73.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

vim: before 9.0.1367-1.73

External links

http://alas.aws.amazon.com/ALAS-2023-1703.html

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) Heap-based buffer overflow

EUVDB-ID: #VU71558

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-0433

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

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 error within the same_leader() and utfc_ptr2len() function. A remote attacker can trick the victim to open a specially crafted file, trigger a 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.

Mitigation

Update the affected packages:

i686:
    vim-enhanced-9.0.1367-1.73.amzn1.i686
    vim-minimal-9.0.1367-1.73.amzn1.i686
    vim-common-9.0.1367-1.73.amzn1.i686
    vim-debuginfo-9.0.1367-1.73.amzn1.i686

noarch:
    vim-data-9.0.1367-1.73.amzn1.noarch
    vim-filesystem-9.0.1367-1.73.amzn1.noarch

src:
    vim-9.0.1367-1.73.amzn1.src

x86_64:
    vim-enhanced-9.0.1367-1.73.amzn1.x86_64
    vim-minimal-9.0.1367-1.73.amzn1.x86_64
    vim-debuginfo-9.0.1367-1.73.amzn1.x86_64
    vim-common-9.0.1367-1.73.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

vim: before 9.0.1367-1.73

External links

http://alas.aws.amazon.com/ALAS-2023-1703.html

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) Division by zero

EUVDB-ID: #VU72341

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-2023-0512

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to a divide by zero in the adjust_skipcol() function in move.c. A remote attacker can trick the victim to open a specially crafted file and crash the editor.

Mitigation

Update the affected packages:

i686:
    vim-enhanced-9.0.1367-1.73.amzn1.i686
    vim-minimal-9.0.1367-1.73.amzn1.i686
    vim-common-9.0.1367-1.73.amzn1.i686
    vim-debuginfo-9.0.1367-1.73.amzn1.i686

noarch:
    vim-data-9.0.1367-1.73.amzn1.noarch
    vim-filesystem-9.0.1367-1.73.amzn1.noarch

src:
    vim-9.0.1367-1.73.amzn1.src

x86_64:
    vim-enhanced-9.0.1367-1.73.amzn1.x86_64
    vim-minimal-9.0.1367-1.73.amzn1.x86_64
    vim-debuginfo-9.0.1367-1.73.amzn1.x86_64
    vim-common-9.0.1367-1.73.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

vim: before 9.0.1367-1.73

External links

http://alas.aws.amazon.com/ALAS-2023-1703.html

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) Division by zero

EUVDB-ID: #VU73169

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1127

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to a divide by zero error within the scrolldown() function in move.c. A remote attacker can trick the victim to open a specially crafted file and crash the editor.

Mitigation

Update the affected packages:

i686:
    vim-enhanced-9.0.1367-1.73.amzn1.i686
    vim-minimal-9.0.1367-1.73.amzn1.i686
    vim-common-9.0.1367-1.73.amzn1.i686
    vim-debuginfo-9.0.1367-1.73.amzn1.i686

noarch:
    vim-data-9.0.1367-1.73.amzn1.noarch
    vim-filesystem-9.0.1367-1.73.amzn1.noarch

src:
    vim-9.0.1367-1.73.amzn1.src

x86_64:
    vim-enhanced-9.0.1367-1.73.amzn1.x86_64
    vim-minimal-9.0.1367-1.73.amzn1.x86_64
    vim-debuginfo-9.0.1367-1.73.amzn1.x86_64
    vim-common-9.0.1367-1.73.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

vim: before 9.0.1367-1.73

External links

http://alas.aws.amazon.com/ALAS-2023-1703.html

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.