Debian update for tomcat9



| Updated: 2024-10-25
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2020-9484
CVE-2021-43980
CVE-2022-23181
CVE-2022-29885
CWE-ID CWE-502
CWE-200
CWE-264
CWE-19
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Public exploit code for vulnerability #4 is available.
Vulnerable software
 Debian Linux
Operating systems & Components / Operating system

tomcat9 (Debian package)
Operating systems & Components / Operating system package or component

Vendor Debian

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Deserialization of Untrusted Data

EUVDB-ID: #VU28158

Risk: High

CVSSv4.0: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2020-9484

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: Yes

Description

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

The vulnerability exists due to insecure input validation when processing serialized data in uploaded files names. A remote attacker can pass specially crafted file name to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that the server is configured to use PersistenceManager with a FileStore and the attacker knows relative file path from storage location.

Mitigation

Update tomcat9 package to version 9.0.43-2~deb11u4.

Vulnerable software versions

Debian Linux: All versions

tomcat9 (Debian package): before 9.0.43-2~deb11u4

CPE2.3 External links

https://www.debian.org/security/2022/dsa-5265


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.

2) Information disclosure

EUVDB-ID: #VU67714

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-2021-43980

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to incorrect implementation of blocking reads and writes. A remote attacker can trigger a concurrency bug and force client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.

Mitigation

Update tomcat9 package to version 9.0.43-2~deb11u4.

Vulnerable software versions

Debian Linux: All versions

tomcat9 (Debian package): before 9.0.43-2~deb11u4

CPE2.3 External links

https://www.debian.org/security/2022/dsa-5265


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) Security restrictions bypass

EUVDB-ID: #VU60079

Risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-23181

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a time of check, time of use flaw when configured to persist sessions using the FileStore. A local user can perform certain actions which lead to security restrictions bypass and privilege escalation (code execution with Tomcat process privileges).

Mitigation

Update tomcat9 package to version 9.0.43-2~deb11u4.

Vulnerable software versions

Debian Linux: All versions

tomcat9 (Debian package): before 9.0.43-2~deb11u4

CPE2.3 External links

https://www.debian.org/security/2022/dsa-5265


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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

4) Data Handling

EUVDB-ID: #VU63225

Risk: Low

CVSSv4.0: 2.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2022-29885

CWE-ID: CWE-19 - Data Handling

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform DoS attack.

The vulnerability exists due to an error in documentation for the EncryptInterceptor, which incorrectly stated that it enabled Tomcat clustering to run over an untrusted network. A remote attacker can perform a denial of service attack against the exposed EncryptInterceptor.

Mitigation

Update tomcat9 package to version 9.0.43-2~deb11u4.

Vulnerable software versions

Debian Linux: All versions

tomcat9 (Debian package): before 9.0.43-2~deb11u4

CPE2.3 External links

https://www.debian.org/security/2022/dsa-5265


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.



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