Debian update for firefox-esr



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-7843
CWE-ID CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Debian Linux
Operating systems & Components / Operating system

Vendor Debian

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU9527

Risk: Low

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

CVE-ID: CVE-2017-7843

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists in web worker while in Private Browsing mode due to improper input validation. A remote attacker can trick the victim into visiting a specially crafted website, bypass private-browsing protections and uniquely fingerprint visitors.to write persistent data to IndexedDB, which was not cleared when exiting and would persist across multiple sessions.

Mitigation

Update the affected package to version: 52.5.2esr-1~deb8u1, 52.5.2esr-1~deb9u1

Vulnerable software versions

Debian Linux: All versions

CPE2.3 External links

https://www.mozilla.org/en-US/security/advisories/mfsa2017-27/


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.



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