found by coverity
CID 343528 (#1 of 1): Dereference before null check (REVERSE_INULL)
check_after_deref: Null-checking name suggests that it may be null,
but it has already been dereferenced on all paths leading to the
check.
438 if (name == NULL || k == NULL || k->private_key == false)
439 {
440 sec->Error = SEC_ERROR_BAD_PARAMETER;
441 return false;
442 }
found by coverity
CID 343537 (#1 of 1): Dereference before null check (REVERSE_INULL)
check_after_deref: Null-checking name suggests that it may be null
but it has already been dereferenced on all paths leading to the
check.
664 if (name == NULL)
665 {
666 sec->Error = SEC_ERROR_BAD_PARAMETER;
667 return false;
668 }
found by coverity
CID 343536 (#1 of 1): Dereference before null check (REVERSE_INULL)
check_after_deref: Null-checking name suggests that it may be null, but
it has already been dereferenced on all paths leading to the check.
1339 if (name == NULL || data == NULL || size == 0)
1340 {
1341 sec->Error = SEC_ERROR_BAD_PARAMETER;
1342 return false;
1343 }
TALOS-2023-1741
CVE-2023-23581
SoftEther VPN vpnserver EnSafeHttpHeaderValueStr denial of service
vulnerability
A denial of service vulnerability exists in the vpnserver
EnSafeHttpHeaderValueStr functionality of SoftEther VPN 5.01.9674 and
5.02. A specially-crafted network packet can lead to denial of service.
This is just a cosmetic problem in the result of "Caps" command which
gets the list of server functions/capability. There's no behavioural
change in SoftEtherVPN whether running on VM so far.
1875 if (mutex == NULL)
1876 {
CID 367204 (#1 of 1): Resource leak (RESOURCE_LEAK)4. leaked_storage: Variable lock going out of scope leaks the storage it points to.
1877 return NULL;
1878 }
We need the function since 9dbbfcd388, but unfortunately it's not provided by LibreSSL.
By introducing a build time check we inform the user about the issue explicitly instead of just letting compilation fail.
The files are created in a new folder to keep the source tree tidier.
Please note that only X25519/X448 keys are supported due to an OpenSSL limitation:
https://www.openssl.org/docs/manmaster/man3/EVP_PKEY_new.html
We have functions that handle AES keys in Encrypt.c/.h.
Ideally we should move them into the new files.
Our own implementation works fine, however we should use OpenSSL's one since we already link to the library.
Base64Decode() and Base64Encode() return the required buffer size when "dst" is NULL.
This allows to efficiently allocate a buffer, without wasting memory or risking an overflow.
Base64FromBin() and Base64ToBin() perform all steps, returning a heap-allocated buffer with the data in it.
- <pthread.h> included for the "pthread_t" type definition.
- <net/ethernet.h> include removed as the header doesn't exist.
- AI_ALL and AI_V4MAPPED defined to 0 as the options don't exist.
52 bytes in 2 blocks are definitely lost in loss record 5 of 13
at 0x483877F: malloc (vg_replace_malloc.c:307)
by 0x4ABB1BB: UnixMemoryAlloc (Unix.c:2033)
by 0x4A7FABF: InternalMalloc (Memory.c:3819)
by 0x4A7B769: MallocEx (Memory.c:3650)
by 0x4A7B769: Malloc (Memory.c:3641)
by 0x4AA71A9: CopyStr (Str.c:1884)
by 0x4A61A9C: DnsCacheReverseUpdate (DNS.c:257)
by 0x4A62123: DnsResolveReverse (DNS.c:506)
by 0x4A93EB3: GetHostName (Network.c:15023)
by 0x4A93EB3: AcceptInitEx (Network.c:12589)
by 0x4934659: TCPAcceptedThread (Listener.c:172)
by 0x4A76469: ThreadPoolProc (Kernel.c:872)
by 0x4ABD159: UnixDefaultThreadProc (Unix.c:1589)
by 0x51C2EA6: start_thread (pthread_create.c:477)
2,280 (684 direct, 1,596 indirect) bytes in 9 blocks are definitely lost in loss record 11 of 13
at 0x483877F: malloc (vg_replace_malloc.c:307)
by 0x4C65AC5: gaih_inet.constprop.0 (getaddrinfo.c:1058)
by 0x4C67224: getaddrinfo (getaddrinfo.c:2256)
by 0x4A61E06: DnsResolver (DNS.c:404)
by 0x4A76469: ThreadPoolProc (Kernel.c:872)
by 0x4ABD159: UnixDefaultThreadProc (Unix.c:1589)
by 0x51C2EA6: start_thread (pthread_create.c:477)
by 0x4C7CDEE: clone (clone.S:95)
From a functional point of view, the main improvement is that GetIP() now always prioritizes IPv6 over IPv4.
The previous implementation always returned an IPv4 address, unless not available: in such case it failed.
This means that now connections to hostnames should be established via IPv6 if available.
From a programmer point of view, getting rid of the insane wrappers is enough to justify a complete rewrite.
As an extra, several unrelated unused global variables are removed.
This greatly improves performance and reduces the binary's size (~0.2 MB vs ~5 MB).
All recent Windows versions are supported, starting with Vista.
No dialogs are created, aside from error/warning ones in case of failure.
The only dependency (aside from Windows libraries) is libhamcore.
The bug caused ProtoOptionsGet and ProtoOptionsSet not to work anymore after c90617e0e86dedf78e0e3c8a71263a80eec29caa.
The functions were introduced in aa65327e73, but the issue went unnoticed because bool was the same as UINT.
BOOL was just an alias for bool, this commit replaces all instances of it for consistency.
For some reason bool was defined as a 4-byte integer instead of a 1-byte one, presumably to match WinAPI's definition: https://docs.microsoft.com/en-us/windows/win32/winprog/windows-data-types
Nothing should break now that bool is 1-byte, as no protocol code appears to be relying on the size of the data type.
PACK, for example, explicitly stores boolean values as 4-byte integers.
This commit can be seen as a follow-up to 61ccaed4f6.
This new implementation can be easily compiled and executed without the need for other components to be present.
It relies on standard C functions, aside from stat() which is part of POSIX but available on Windows as well.
There's only one third-party dependency, which is tinydir: a single-file header-only library for traversing directories.
(gdb) bt
0 0x00007f43857a5e14 in __GI___pthread_mutex_init (mutex=0x0, mutexattr=0x0) at pthread_mutex_init.c:89
1 0x00007f4385eaaf1b in UnixNewLock () at SoftEtherVPN/src/Mayaqua/Unix.c:1845
2 0x00007f4385e92331 in NewLockMain () at SoftEtherVPN/src/Mayaqua/Object.c:89
3 0x00007f4385e92359 in NewLock () at SoftEtherVPN/src/Mayaqua/Object.c:101
4 0x00007f4385e92765 in NewCounter () at SoftEtherVPN/src/Mayaqua/Object.c:171
5 0x00007f4385e92e76 in NewRef () at SoftEtherVPN/src/Mayaqua/Object.c:339
6 0x00007f4385e76939 in NewSkEx (no_compact=0) at SoftEtherVPN/src/Mayaqua/Memory.c:863
7 0x00007f4385e68c95 in NormalizePathW (
dst=0x7ffe65932940 L"\xd6ff2ffb\xfbf14ce5\xad8669ca\x41998a9c\x5107d62d\x8d2ab3f2\x37ceaad2\xffc947ec\xad8ed8d8\x33e9f2f7\xc05723a9\x843263e3\x5516beb3\x12571e2a\xd81405f3\xf92194fe\xd807aa98\x12835b01\x243185be\x550c7dc3\xfd74170d\x12835b01\x553185be\x550c7dc3\x72be5d74\x80deb1fe\x9bdc06a7\xc19bf1f4\x72be5d74\x80deb1fe\x9bdc06a7\xc19bf174\x894d4018\xc54302b8\x145dc92\x143b3917\x62aa4fb8\x915764b1\xd5e11bef\x9d5fbc5\xb956c25b\x59f111f1\x923f82a4\xab1c5ed5\x3956c25b\x59f111f1\x923f82a4\xab1c5ed5\xbaeb40", size=2048, src=<optimized out>)
at SoftEtherVPN/src/Mayaqua/FileIO.c:1960
8 0x00007f4385e69188 in ConbinePathW (
dst=0x7ffe65932940 L"\xd6ff2ffb\xfbf14ce5\xad8669ca\x41998a9c\x5107d62d\x8d2ab3f2\x37ceaad2\xffc947ec\xad8ed8d8\x33e9f2f7\xc05723a9\x843263e3\x5516beb3\x12571e2a\xd81405f3\xf92194fe\xd807aa98\x12835b01\x243185be\x550c7dc3\xfd74170d\x12835b01\x553185be\x550c7dc3\x72be5d74\x80deb1fe\x9bdc06a7\xc19bf1f4\x72be5d74\x80deb1fe\x9bdc06a7\xc19bf174\x894d4018\xc54302b8\x145dc92\x143b3917\x62aa4fb8\x915764b1\xd5e11bef\x9d5fbc5\xb956c25b\x59f111f1\x923f82a4\xab1c5ed5\x3956c25b\x59f111f1\x923f82a4\xab1c5ed5\xbaeb40", size=2048,
dirname=0xbace10 L"/root/.local/bin", filename=0x7ffe65932100 L"SoftEtherVPN/build/vpntest") at SoftEtherVPN/src/Mayaqua/FileIO.c:1686
9 0x00007f4385e6af48 in UnixGetExeNameW (name=0x7f4385ede820 <exe_file_name_w> L"/tmp/a.out", size=2048, arg=0xbb5050 L"./vpntest") at SoftEtherVPN/src/Mayaqua/FileIO.c:1401
10 0x00007f4385e6b04b in InitGetExeName (arg=<optimized out>) at SoftEtherVPN/src/Mayaqua/FileIO.c:1367
11 0x00007f4385e7470a in InitMayaqua (memcheck=memcheck@entry=0, debug=debug@entry=1, argc=argc@entry=3, argv=argv@entry=0x7ffe659340e8)
at SoftEtherVPN/src/Mayaqua/Mayaqua.c:456
12 0x0000000000401282 in main (argc=3, argv=0x7ffe659340e8) at SoftEtherVPN/src/vpntest/vpntest.c:259
Since 35200a29ea we build complete installers using CMake, meaning that there's no need for BuildUtil anymore.
MSBuild projects that are not migrated to CMake yet are kept for reference.
This commit also updates BUILD_WINDOWS.md so that it mentions Visual Studio 2019 instead of 2017.
