Multiple vulnerabilities in Mozilla Firefox and Firefox ESR
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 10 |
| CVE-ID | CVE-2023-6204 CVE-2023-6205 CVE-2023-6206 CVE-2023-6207 CVE-2023-6208 CVE-2023-6209 CVE-2023-6212 CVE-2023-6210 CVE-2023-6211 CVE-2023-6213 |
| CWE-ID | CWE-787 CWE-416 CWE-450 CWE-200 CWE-20 CWE-119 CWE-264 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Mozilla Firefox Client/Desktop applications / Web browsers Firefox ESR Client/Desktop applications / Web browsers Firefox for Android Mobile applications / Apps for mobile phones |
| Vendor | Mozilla |
Security Bulletin
This security bulletin contains information about 10 vulnerabilities.
1) Out-of-bounds write
EUVDB-ID: #VU83367
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-2023-6204
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing HTML content in in WebGL2 blitFramebuffer. A remote attacker can trick the victim ti visit a specially crafted website, trigger an out-of-bounds write and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 100.0 - 119.0.1
Firefox ESR: 102.0 - 115.4.0
Firefox for Android: 100.1.0 - 119.1.1
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
http://www.mozilla.org/en-US/security/advisories/mfsa2023-50/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Use-after-free
EUVDB-ID: #VU83368
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-2023-6205
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in the MessagePort::Entangled() method. A remote attacker can trick the victim to open a specially crafted website, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 100.0 - 119.0.1
Firefox ESR: 102.0 - 115.4.0
Firefox for Android: 100.1.0 - 119.1.1
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
http://www.mozilla.org/en-US/security/advisories/mfsa2023-50/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Multiple Interpretations of UI Input
EUVDB-ID: #VU83369
Risk: Medium
CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-6206
CWE-ID:
CWE-450 - Multiple Interpretations of UI Input
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform clickjacking attack.
The vulnerability exists due to the black fade animation when exiting fullscreen is roughly
the length of the anti-clickjacking delay on permission prompts. A remote attacker can perform clickjacking attack and trick the victim into pressing the permissions grant button.
Install updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 100.0 - 119.0.1
Firefox ESR: 102.0 - 115.4.0
Firefox for Android: 100.1.0 - 119.1.1
External linkshttp://www.mozilla.org/security/advisories/mfsa2023-49/
http://www.mozilla.org/security/advisories/mfsa2023-50/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Use-after-free
EUVDB-ID: #VU83370
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-2023-6207
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in the ReadableByteStreamQueueEntry::Buffer() method. A remote attacker can trick the victim to open a specially crafted website, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 100.0 - 119.0.1
Firefox ESR: 102.0 - 115.4.0
Firefox for Android: 100.1.0 - 119.1.1
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
http://www.mozilla.org/en-US/security/advisories/mfsa2023-50/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
5) Information disclosure
EUVDB-ID: #VU83371
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-6208
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to the Selection API copies text by mistake into the primary selection, a temporary storage not unlike the clipboard, when using on X11. A local user can gain access to potentially sensitive information.
Note, the vulnerability affects only Firefox installations on X11.
Install updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 100.0 - 119.0.1
Firefox ESR: 102.0 - 115.4.0
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
http://www.mozilla.org/en-US/security/advisories/mfsa2023-50/
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.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
6) Input validation error
EUVDB-ID: #VU83372
Risk: Medium
CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-6209
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to manipulate data on websites.
The vulnerability exists due to insufficient validation of user-supplied input when parsing relative URLs that start with a triple slash, e.g. "///". A remote attacker can use a path-traversal "/../" part in the path to override the specified host.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 100.0 - 119.0.1
Firefox ESR: 102.0 - 115.4.0
Firefox for Android: 100.1.0 - 119.1.1
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
http://www.mozilla.org/en-US/security/advisories/mfsa2023-50/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
7) Memory corruption
EUVDB-ID: #VU83373
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-2023-6212
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can trick the victim ti visit a specially crafted website, trigger a memory corruption and execute arbitrary code on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 100.0 - 119.0.1
Firefox ESR: 102.0 - 115.4.0
Firefox for Android: 100.1.0 - 119.1.1
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
http://www.mozilla.org/en-US/security/advisories/mfsa2023-50/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
8) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU83374
Risk: Medium
CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-6210
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to application does not properly impose security restrictions. When an https: web page created a pop-up from a "javascript:" URL, that pop-up was incorrectly allowed to load blockable content, such as iframes from insecure http: URLs.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 116.0 - 119.0.1
Firefox for Android: 116.0 - 119.1.1
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
9) Multiple Interpretations of UI Input
EUVDB-ID: #VU83375
Risk: Low
CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-6211
CWE-ID:
CWE-450 - Multiple Interpretations of UI Input
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform clickjacking attack.
If an attacker needed a user to load an insecure http: page and knew that user had enabled HTTPS-only mode, the attacker could have tricked the user into clicking to grant an HTTPS-only exception if they could get the user to participate in a clicking game. MitigationInstall updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 116.0 - 119.0.1
Firefox for Android: 116.0 - 119.1.1
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
10) Buffer overflow
EUVDB-ID: #VU83376
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-2023-6213
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMozilla Firefox: 116.0 - 119.0.1
Firefox for Android: 116.0 - 119.1.1
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2023-49/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to visit a specially crafted website.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
