Out-of-bounds read in firefox-esr (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-11719
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 firefox-esr (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU33037

Risk: Medium

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

CVE-ID: CVE-2019-11719

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

When importing a curve25519 private key in PKCS#8format with leading 0x00 bytes, it is possible to trigger an out-of-bounds read in the Network Security Services (NSS) library. This could lead to information disclosure. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

Mitigation

Install update from vendor's website.

Vulnerable software versions

firefox-esr (Alpine package): 60.4.0-r0 - 60.7.2-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=dbc43022e7aaaeb53d19f31c2ba03ab99f95c608
https://git.alpinelinux.org/aports/commit/?id=2619d83127353533f980218076d6c0c02fe7c198
https://git.alpinelinux.org/aports/commit/?id=a0c09e8b7fb341082bdaced72c40714ba91f932a


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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