Multiple vulnerabilities in Mastodon

1) Cross-site scripting

EUVDB-ID: #VU78043

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-36459

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within the oEmbed preview cards. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mastodon: 1.3 - 4.1.2

CPE2.3

• cpe:2.3:a:mastodon:mastodon:1.3:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.4.2:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.4.4:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.4.5:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.4.6:*:*:*:*:*:*:*

External links

https://github.com/mastodon/mastodon/releases/tag/v3.5.9
https://github.com/mastodon/mastodon/security/advisories/GHSA-ccm4-vgcc-73hp
https://github.com/mastodon/mastodon/commit/6d8e0fae3e96f3cf4febe03fa7fcf5b95ff761b2
https://github.com/mastodon/mastodon/releases/tag/v4.0.5
https://github.com/mastodon/mastodon/releases/tag/v4.1.3
https://www.openwall.com/lists/oss-security/2023/07/06/5

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) Path traversal

EUVDB-ID: #VU78046

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Green]

CVE-ID: CVE-2023-36460

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote user can send a specially crafted HTTP request and create and overwrite arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Mastodon: 3.5.0 - 4.1.2

CPE2.3

• cpe:2.3:a:mastodon:mastodon:3.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:3.5.1:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:3.5.2:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:3.5.3:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:3.5.4:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:3.5.5:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:3.5.6:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:3.5.7:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:3.5.8:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:4.0.0:*:*:*:*:*:*:*

External links

https://github.com/mastodon/mastodon/releases/tag/v3.5.9
https://github.com/mastodon/mastodon/security/advisories/GHSA-9928-3cp5-93fm
https://github.com/mastodon/mastodon/commit/dc8f1fbd976ae544720a4e07120d9a91b2722440
https://github.com/mastodon/mastodon/releases/tag/v4.0.5
https://github.com/mastodon/mastodon/releases/tag/v4.1.3
https://www.openwall.com/lists/oss-security/2023/07/06/4

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Input validation error

EUVDB-ID: #VU78045

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-36461

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to slow HTTP responses. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mastodon: 0.1.0 - 4.1.2

CPE2.3

• cpe:2.3:a:mastodon:mastodon:0.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:0.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:0.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:0.6:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:0.7:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:0.8:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:0.9:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:0.9.9:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:1.1:*:*:*:*:*:*:*

External links

https://github.com/mastodon/mastodon/releases/tag/v3.5.9
https://github.com/mastodon/mastodon/security/advisories/GHSA-9pxv-6qvf-pjwc
https://github.com/mastodon/mastodon/releases/tag/v4.0.5
https://github.com/mastodon/mastodon/commit/c5929798bf7e56cc2c79b15bed0c4692ded3dcb6
https://github.com/mastodon/mastodon/releases/tag/v4.1.3
https://www.openwall.com/lists/oss-security/2023/07/06/7

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) Input validation error

EUVDB-ID: #VU78044

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-36462

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can craft a verified profile link using specific formatting to conceal arbitrary parts of the link, enabling it to appear to link to a different URL altogether.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Mastodon: 2.6.0 - 4.1.2

CPE2.3

• cpe:2.3:a:mastodon:mastodon:2.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:2.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:2.6.2:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:2.6.3:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:2.6.4:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:2.6.5:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:2.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:2.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:2.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:mastodon:mastodon:2.7.3:*:*:*:*:*:*:*

External links

https://github.com/mastodon/mastodon/commit/610731b03dfcadd887078cb0399f4e514aa1931c
https://github.com/mastodon/mastodon/releases/tag/v3.5.9
https://github.com/mastodon/mastodon/releases/tag/v4.0.5
https://github.com/mastodon/mastodon/security/advisories/GHSA-55j9-c3mp-6fcq
https://github.com/mastodon/mastodon/releases/tag/v4.1.3

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.