Project: nss

Language c++
OSS-Fuzz project link
Project repository link
Build status: Fuzzers succeeding: Build log
Build status: Code coverage succeeding: Build log
Build status: Fuzz Introspector succeeding: Build log
Fuzzer count 15
Lines of code 249156
Lines covered 69745
Code coverage 27.99%
Code coverage report Report link
Static reachability 34.19%
Fuzz Introspector report Report link (from 2025-03-27)
Fuzzer Code coverage (lines) Latest Report Comments
asn1 1.2% (avg: 1.2%, max: 1.2%) 2025-03-27
certDN 1.78% (avg: 1.78%, max: 1.78%) 2025-03-27
dtls-client 16.65% (avg: 16.65%, max: 16.65%) 2025-03-27
dtls-client-no_fuzzer_mode 19.38% (avg: 18.98%, max: 19.38%) 2025-03-27
dtls-server 19.95% (avg: 19.55%, max: 19.95%) 2025-03-27
dtls-server-no_fuzzer_mode 21.46% (avg: 21.43%, max: 21.48%) 2025-03-27
pkcs12 5.18% (avg: 5.89%, max: 6.66%) 2025-03-27
pkcs7 12.65% (avg: 12.12%, max: 12.65%) 2025-03-27
pkcs8 5.75% (avg: 5.41%, max: 5.75%) 2025-03-27
quickder 0.68% (avg: 0.68%, max: 0.68%) 2025-03-27
smime 4.43% (avg: 4.61%, max: 5.29%) 2025-03-27
tls-client 18.99% (avg: 18.89%, max: 18.99%) 2025-03-27
tls-client-no_fuzzer_mode 20.49% (avg: 20.47%, max: 20.49%) 2025-03-27
tls-server 19.76% (avg: 19.73%, max: 19.77%) 2025-03-27
tls-server-no_fuzzer_mode 21.08% (avg: 21.06%, max: 21.08%) 2025-03-27

Historical Progression

Per Fuzzer Progression

Functions of interest to fuzz

This section outlines functions that may be of interest to fuzz. They are based on ranking functions that have a lot of complexity but currently exhibit low code coverage. The complexity is calculated based on the function itself as well as the functions called by the given function, i.e. the tree of code that the function triggers.


This is only a minor amount of introspection information available for this project. Please consult the Fuzz Introspector report for more information, e.g. the introspection table of all functions in the target project available here.

Function name Function source file Accumulated cyclomatic complexity Code coverage
FC_CreateObject /src/nss/out/Debug/../../lib/softoken/fipstokn.c 18991 0.0%
FC_Initialize /src/nss/out/Debug/../../lib/softoken/fipstokn.c 16804 0.0%
sftk_CreateNewSlot /src/nss/out/Debug/../../lib/softoken/pkcs11.c 16720 0.0%
SSL_ForceHandshakeWithTimeout /src/nss/out/Debug/../../lib/ssl/sslsecur.c 14380 0.0%
SSLExp_RecordLayerData /src/nss/out/Debug/../../lib/ssl/ssl3gthr.c 14088 0.0%
sftk_DBInit /src/nss/out/Debug/../../lib/softoken/sftkdb.c 13991 0.0%
s_open /src/nss/out/Debug/../../lib/softoken/sdb.c 13956 0.0%
sdb_init /src/nss/out/Debug/../../lib/softoken/sdb.c 13932 0.0%
sdb_GetMetaData /src/nss/out/Debug/../../lib/softoken/sdb.c 13870 0.0%
sdb_Begin /src/nss/out/Debug/../../lib/softoken/sdb.c 13802 0.0%