Input validation error in Mozilla Firefox ESR
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-11711 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Firefox ESR Client/Desktop applications / Web browsers |
| Vendor | Mozilla |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Input validation error
EUVDB-ID: #VU33032
Risk: High
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2019-11711
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
When an inner window is reused, it does not consider the use of document.domain for cross-origin protections. If pages on different subdomains ever cooperatively use document.domain, then either page can abuse this to inject script into arbitrary pages on the other subdomain, even those that did not use document.domain to relax their origin security. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
MitigationInstall update from vendor's website.
Vulnerable software versionsFirefox ESR: 60.0 - 60.7.2
CPE2.3 External linkshttps://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html
https://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html
https://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html
https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html
https://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1552541
https://lists.debian.org/debian-lts-announce/2019/08/msg00001.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00002.html
https://security.gentoo.org/glsa/201908-12
https://security.gentoo.org/glsa/201908-20
https://www.mozilla.org/security/advisories/mfsa2019-21/
https://www.mozilla.org/security/advisories/mfsa2019-22/
https://www.mozilla.org/security/advisories/mfsa2019-23/
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.
