Multiple vulnerabilities in Mozilla Firefox
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 14 |
| CVE-ID | CVE-2018-12391 CVE-2018-12392 CVE-2018-12393 CVE-2018-12395 CVE-2018-12396 CVE-2018-12397 CVE-2018-12398 CVE-2018-12399 CVE-2018-12400 CVE-2018-12401 CVE-2018-12402 CVE-2018-12403 CVE-2018-12388 CVE-2018-12390 |
| CWE-ID | CWE-20 CWE-388 CWE-787 CWE-190 CWE-200 CWE-119 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Mozilla Firefox Client/Desktop applications / Web browsers |
| Vendor | Mozilla |
Security Bulletin
This security bulletin contains information about 14 vulnerabilities.
1) Cross-origin policy bypass
EUVDB-ID: #VU15489
Risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12391
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to audio data can be accessed across origins in violation of security policies during HTTP Live Stream playback on Firefox for Android. A remote attacker can trick the victim into visiting a specially crafted website, bypass cross-origin policies and conduct further attacks.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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) Poor event handling
EUVDB-ID: #VU15490
Risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12392
CWE-ID:
CWE-388 - Error Handling
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to poor event handling when manipulating user events in nested loops while opening a document through script. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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) Integer overflow
EUVDB-ID: #VU15491
Risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12393
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to integer overflow during the conversion of scripts to an internal UTF-16 representation. A remote attacker can trick the victim into visiting a specially crafted website, trigger out-of-bounds write and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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) Security restrictions bypass
EUVDB-ID: #VU15494
Risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12395
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error in WebExtension. A remote attacker can trick the victim into visiting a specially crafted website, rewrite the Host request headers using the webRequest API and bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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) Privilege escalation
EUVDB-ID: #VU15495
Risk: Low
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-2018-12396
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain elevated privileges on the target system.
The weakness exists due to a WebExtension can run content scripts in disallowed contexts following navigation or other events. A remote attacker can trick the victim into visiting a specially crafted website containing WebExtension where content scripts should not be run and gain elevated privileges.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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.
6) Security restrictions bypass
EUVDB-ID: #VU15496
Risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12397
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to WebExtension can request access to local files without the warning prompt stating that the extension will "Access your data for all websites" being displayed to the user. A remote attacker can trick the victim into visiting a specially crafted website, run content scripts in local pages without permission warnings when a local file is opened.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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) Security restrictions bypass
EUVDB-ID: #VU15497
Risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12398
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to an error when using the reflected URL in some special resource URIs, such as chrome. A remote attacker can trick the victim into visiting a specially crafted website, inject stylesheets and bypass Content Security Policy (CSP).
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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) Spoofing attack
EUVDB-ID: #VU15498
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12399
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to conduct spoofing attack on the target system.
The weakness exists due to the API accepts a title argument when a new protocol handler is registered. A remote attacker can trick the victim into visiting a specially crafted website, users about which domain is registering the new protocol to spoof protocol registration notification bar
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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) Information disclosure
EUVDB-ID: #VU15499
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12400
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists in private browsing mode on Firefox for Android due to favicons are cached in the cache/icons folder as they are in non-private mode. A remote attacker can trick the victim into visiting a specially crafted website and gain access to arbitrary data during private browsing sessions.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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) Improper input validation
EUVDB-ID: #VU15500
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12401
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to an error when using special resource URIs. A remote attacker can trick the victim into visiting a specially crafted website and cause a non-exploitable crash if loaded with optional parameters following a '?' in the parsed string.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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.
11) Information disclosure
EUVDB-ID: #VU15502
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12402
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists due to SameSite cookies are sent on cross-origin requests when the "Save Page As..." menu item is selected to save a page. A remote attacker can trick the victim into visiting a specially crafted website and gain access to SameSite cookies.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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.
12) Security restrictions bypass
EUVDB-ID: #VU15503
Risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12403
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to the mixed content warning is not displayed to users if a site is loaded over a HTTPS connection but loads a favicon resource over HTTP. A remote attacker can trick the victim into visiting a specially crafted website and bypass security restrictions.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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.
13) Memory corruption
EUVDB-ID: #VU15492
Risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12388
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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.
14) Memory corruption
EUVDB-ID: #VU15493
Risk: High
CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-12390
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
Update to version 63.0.
Vulnerable software versionsMozilla Firefox: 62.0 - 62.0.3
External linkshttp://www.mozilla.org/en-US/security/advisories/mfsa2018-26/
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.
