Vulnerability Description
The s_mp_div function in lib/freebl/mpi/mpi.c in Mozilla Network Security Services (NSS) before 3.21, as used in Mozilla Firefox before 44.0, improperly divides numbers, which might make it easier for remote attackers to defeat cryptographic protection mechanisms by leveraging use of the (1) mp_div or (2) mp_exptmod function.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Opensuse | Leap | 42.1 |
| Opensuse | Opensuse | 13.1 |
| Mozilla | Nss | <= 3.20.1 |
| Mozilla | Firefox | <= 43.0.4 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00001.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00002.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00010.html
- http://www.debian.org/security/2016/dsa-3688
- http://www.mozilla.org/security/announce/2016/mfsa2016-07.htmlVendor Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.htmlThird Party Advisory
- http://www.securityfocus.com/bid/81955
- http://www.securityfocus.com/bid/91787Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1034825
- http://www.ubuntu.com/usn/USN-2880-1
- http://www.ubuntu.com/usn/USN-2880-2
- http://www.ubuntu.com/usn/USN-2903-1
- http://www.ubuntu.com/usn/USN-2903-2
- http://www.ubuntu.com/usn/USN-2973-1
- https://blog.fuzzing-project.org/37-Mozilla-NSS-Wrong-calculation-results-in-mp_
FAQ
What is CVE-2016-1938?
CVE-2016-1938 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The s_mp_div function in lib/freebl/mpi/mpi.c in Mozilla Network Security Services (NSS) before 3.21, as used in Mozilla Firefox before 44.0, improperly divides numbers, which might make it easier for...
How severe is CVE-2016-1938?
CVE-2016-1938 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-1938?
Check the references section above for vendor advisories and patch information. Affected products include: Opensuse Leap, Opensuse Opensuse, Mozilla Nss, Mozilla Firefox.