Gentoo update for Exim



| Updated: 2024-09-06
Risk Critical
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2023-42114
CVE-2023-42115
CVE-2023-42116
CVE-2023-42117
CVE-2023-42119
CVE-2023-51766
CWE-ID CWE-125
CWE-787
CWE-121
CWE-119
CWE-77
Exploitation vector Network
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
 Gentoo Linux
Operating systems & Components / Operating system

mail-mta/exim
Operating systems & Components / Operating system package or component

Vendor Gentoo

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU81251

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-42114

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when handling NTLM challenge requests. A remote attacker can send specially crafted data to the server, trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected packages.
mail-mta/exim to version: 4.97.1

Vulnerable software versions

Gentoo Linux: All versions

mail-mta/exim: before 4.97.1

CPE2.3 External links

https://security.gentoo.org/glsa/202402-18


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) Out-of-bounds write

EUVDB-ID: #VU81252

Risk: Critical

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Red]

CVE-ID: CVE-2023-42115

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when handling AUTH command. A remote non-authenticated attacker can send specially crafted data to the server, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Update the affected packages.
mail-mta/exim to version: 4.97.1

Vulnerable software versions

Gentoo Linux: All versions

mail-mta/exim: before 4.97.1

CPE2.3 External links

https://security.gentoo.org/glsa/202402-18


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. However, proof of concept for this vulnerability is available.

3) Stack-based buffer overflow

EUVDB-ID: #VU81253

Risk: Critical

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red]

CVE-ID: CVE-2023-42116

CWE-ID: CWE-121 - Stack-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 when handling NTLM challenge requests. A remote unauthenticated attacker can send specially crafted data to the server, trigger a stack-based buffer overflow and execute arbitrary code on the target system.


Mitigation

Update the affected packages.
mail-mta/exim to version: 4.97.1

Vulnerable software versions

Gentoo Linux: All versions

mail-mta/exim: before 4.97.1

CPE2.3 External links

https://security.gentoo.org/glsa/202402-18


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) Buffer overflow

EUVDB-ID: #VU81254

Risk: Critical

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red]

CVE-ID: CVE-2023-42117

CWE-ID: CWE-119 - Memory corruption

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 smtp service. A remote attacker can send specially crafted data to the server, trigger memory corruption and execute arbitrary code on the target system.

Mitigation

Update the affected packages.
mail-mta/exim to version: 4.97.1

Vulnerable software versions

Gentoo Linux: All versions

mail-mta/exim: before 4.97.1

CPE2.3 External links

https://security.gentoo.org/glsa/202402-18


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.

5) Out-of-bounds read

EUVDB-ID: #VU81256

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-42119

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in dnsdb implementation. A remote attacker can send specially crafted data to the server, trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected packages.
mail-mta/exim to version: 4.97.1

Vulnerable software versions

Gentoo Linux: All versions

mail-mta/exim: before 4.97.1

CPE2.3 External links

https://security.gentoo.org/glsa/202402-18


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.

6) Command Injection

EUVDB-ID: #VU84728

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-51766

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote attacker to spoof email messages.

The vulnerability exists due to an error when handling line endings other than <CR><LF>. A remote attacker can spoof contents of email message and bypass SPF protection mechanism.

Mitigation

Update the affected packages.
mail-mta/exim to version: 4.97.1

Vulnerable software versions

Gentoo Linux: All versions

mail-mta/exim: before 4.97.1

CPE2.3 External links

https://security.gentoo.org/glsa/202402-18


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.



###SIDEBAR###