276312 - PK11_DigestOp will crash given a NULL context

Status: RESOLVED DUPLICATE of bug 276311

(NSS :: Libraries, defect)

Description

[Jason Reid]

secStatus = PK11_DigestOp(NULL, buffer, strlen(buffer));

The above code fragment causes a segmentation violation.
> gdb ./hash-tests
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This GDB was configured as "i586-suse-linux"...
(gdb) run
Starting program: /home/jmr/work/nss/tests/Hashing/hash-tests
[New Thread 16384 (LWP 3354)]
deadbeef hash tests with PK11_HashBuf
MD2= 17682ba795d60a2e740ba5f4539007a4
MD5= 4f41243847da693a4f356c0486114bc6
SHA1= f49cf6381e322b147053b74e4500af8533ac1e4c
SHA256= 2baf1f40105d9501fe319a8ec463fdf4325a2a5df445adf3f572f626253678c9
SHA384=
906d9fe92a5e0ad7e020842127f7970b7d2adff3a91106927b592cf157633d86d0be6ab78f5d398e53f705643ccbfb78
SHA512=
113a3bc783d851fc0373214b19ea7be9fa3de541ecb9fe026d52c603e8ea19c174cc0e9705f8b90d312212c0c3a6d8453ddfb3e3141409cf4bedc8ef033590b4
ERROR: PK11_HashBuf succeeded for a NULL digest
PK11_HashBuf failed for an invalide SEC_OID. (expected)
deadbeef hash tests with PK11_CreateDigestContext
MD2= 17682ba795d60a2e740ba5f4539007a4
PK11_CreateDigestContext failed to return a valid context with -1. (expected)
ERROR: PK11_DigestFinal returned success for a digest without PK11_DigestOp ever
being called.

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 16384 (LWP 3354)]
0x40043a14 in PK11_DigestOp (context=0x0, in=0xbffff170 "deadbeef", inLen=8)
    at pk11cxt.c:777
777         context->init = PR_FALSE;
(gdb) where
#0  0x40043a14 in PK11_DigestOp (context=0x0, in=0xbffff170 "deadbeef",
    inLen=8) at pk11cxt.c:777
#1  0x0804909c in main (argc=1, argv=0xbffff1e4) at hash-tests.c:269

Comment 1

[Nelson Bolyard (seldom reads bugmail)]

*** This bug has been marked as a duplicate of 276311 ***