CVE-2016-1938
Gentoo Linux Security Advisory 201701-46
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
La función s_mp_div en lib/freebl/mpi/mpi.c en Mozilla Network Security Services (NSS) en versiones anteriores a 3.21, como se utiliza en Mozilla Firefox en versiones anteriores a 44.0, no divide adecuadamente números, lo que podría hacer mas fácil para atacantes remotos vencer el mecanismo de protección criptográfico mediante el aprovechamiento del uso de la función (1) mp_div o (2) mp_exptmod.
Bob Clary, Christian Holler, Nils Ohlmeier, Gary Kwong, Jesse Ruderman, Carsten Book, Randell Jesup, Nicolas Pierron, Eric Rescorla, Tyson Smith, and Gabor Krizsanits discovered multiple memory safety issues in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Firefox. Gustavo Grieco discovered an out-of-memory crash when loading GIF images in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could exploit this to cause a denial of service. Various other issues were also addressed.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2016-01-20 CVE Reserved
- 2016-01-27 CVE Published
- 2024-08-05 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-310: Cryptographic Issues
CAPEC
References (23)
| URL | Tag | Source |
|---|---|---|
| http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html | Third Party Advisory |
|
| http://www.securityfocus.com/bid/81955 | Vdb Entry | |
| http://www.securityfocus.com/bid/91787 | Third Party Advisory | |
| http://www.securitytracker.com/id/1034825 | Vdb Entry | |
| https://blog.fuzzing-project.org/37-Mozilla-NSS-Wrong-calculation-results-in-mp_div-and-mp_exptmod.html | X_refsource_misc | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1190248 | Issue Tracking | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1194947 | Issue Tracking | |
| https://github.com/hannob/bignum-fuzz/blob/master/CVE-2016-1938-nss-mp_div.c | X_refsource_misc | |
| https://github.com/hannob/bignum-fuzz/blob/master/CVE-2016-1938-nss-mp_exptmod.c | X_refsource_misc | |
| https://hg.mozilla.org/projects/nss/diff/a555bf0fc23a/lib/freebl/mpi/mpi.c | X_refsource_confirm |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Mozilla Search vendor "Mozilla" | Nss Search vendor "Mozilla" for product "Nss" | <= 3.20.1 Search vendor "Mozilla" for product "Nss" and version " <= 3.20.1" | - |
Affected
| in | Mozilla Search vendor "Mozilla" | Firefox Search vendor "Mozilla" for product "Firefox" | <= 43.0.4 Search vendor "Mozilla" for product "Firefox" and version " <= 43.0.4" | - |
Affected
|
| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 42.1 Search vendor "Opensuse" for product "Leap" and version "42.1" | - |
Affected
| ||||||
| Opensuse Search vendor "Opensuse" | Opensuse Search vendor "Opensuse" for product "Opensuse" | 13.1 Search vendor "Opensuse" for product "Opensuse" and version "13.1" | - |
Affected
| ||||||
| Opensuse Search vendor "Opensuse" | Opensuse Search vendor "Opensuse" for product "Opensuse" | 13.2 Search vendor "Opensuse" for product "Opensuse" and version "13.2" | - |
Affected
| ||||||