diff --git a/include/iprt/mangling.h b/include/iprt/mangling.h index 991dd9e..defc781 100644 --- a/include/iprt/mangling.h +++ b/include/iprt/mangling.h @@ -1802,6 +1802,7 @@ # define RTPathStripSuffix RT_MANGLER(RTPathStripSuffix) # define RTPathStripFilename RT_MANGLER(RTPathStripFilename) # define RTPathStripTrailingSlash RT_MANGLER(RTPathStripTrailingSlash) +# define RTPathSuidDir RT_MANGLER(RTPathSuidDir) # define RTPathTemp RT_MANGLER(RTPathTemp) # define RTPathTraverseList RT_MANGLER(RTPathTraverseList) # define RTPathUnlink RT_MANGLER(RTPathUnlink) @@ -1842,6 +1843,7 @@ # define RTProcGetAffinityMask RT_MANGLER(RTProcGetAffinityMask) # define RTProcGetExecutablePath RT_MANGLER(RTProcGetExecutablePath) # define RTProcGetPriority RT_MANGLER(RTProcGetPriority) +# define RTProcGetSuidPath RT_MANGLER(RTProcGetSuidPath) # define RTProcIsRunningByName RT_MANGLER(RTProcIsRunningByName) # define RTProcQueryParent RT_MANGLER(RTProcQueryParent) # define RTProcQueryUsername RT_MANGLER(RTProcQueryUsername) diff --git a/include/iprt/path.h b/include/iprt/path.h index 89bf8f6..5caa578 100644 --- a/include/iprt/path.h +++ b/include/iprt/path.h @@ -1235,6 +1235,15 @@ RTDECL(int) RTPathCalcRelative(char *pszPathDst, size_t cbPathDst, const char *p */ RTDECL(int) RTPathExecDir(char *pszPath, size_t cchPath); +/** + * Gets the path to the NixOS setuid wrappers directory. + * + * @returns iprt status code. + * @param pszPath Buffer where to store the path. + * @param cchPath Buffer size in bytes. + */ +RTDECL(int) RTPathSuidDir(char *pszPath, size_t cchPath); + /** * Gets the user home directory. * diff --git a/include/iprt/process.h b/include/iprt/process.h index 4ca981e..058ae7a 100644 --- a/include/iprt/process.h +++ b/include/iprt/process.h @@ -384,6 +384,16 @@ RTR3DECL(const char *) RTProcExecutablePath(void); */ RTR3DECL(char *) RTProcGetExecutablePath(char *pszExecPath, size_t cbExecPath); +/** + * Gets the path to the NixOS setuid wrappers directory. + * + * @returns pszExecPath on success. NULL on buffer overflow or other errors. + * + * @param pszExecPath Where to store the path. + * @param cbExecPath The size of the buffer. + */ +RTR3DECL(char *) RTProcGetSuidPath(char *pszExecPath, size_t cbExecPath); + /** * Daemonize the current process, making it a background process. * diff --git a/src/VBox/HostDrivers/Support/SUPR3HardenedVerify.cpp b/src/VBox/HostDrivers/Support/SUPR3HardenedVerify.cpp index e78a397..ff5b541 100644 --- a/src/VBox/HostDrivers/Support/SUPR3HardenedVerify.cpp +++ b/src/VBox/HostDrivers/Support/SUPR3HardenedVerify.cpp @@ -1541,9 +1541,9 @@ static int supR3HardenedVerifyFsObject(PCSUPR3HARDENEDFSOBJSTATE pFsObjState, bo bool fBad = !fRelaxed || pFsObjState->Stat.st_gid != 2 /*bin*/ || suplibHardenedStrCmp(pszPath, "/usr/lib/iconv"); # else NOREF(fRelaxed); - bool fBad = true; + bool fBad = !(fDir && pFsObjState->Stat.st_mode & S_ISVTX && !suplibHardenedStrCmp(pszPath, "/nix/store")); # endif - if (fBad) + if (fBad && suplibHardenedStrCmp(pszPath, "/nix/store")) return supR3HardenedSetError3(VERR_SUPLIB_WRITE_NON_SYS_GROUP, pErrInfo, "An unknown (and thus untrusted) group has write access to '", pszPath, "' and we therefore cannot trust the directory content or that of any subdirectory"); diff --git a/src/VBox/Main/src-all/MachineLaunchVMCommonWorker.cpp b/src/VBox/Main/src-all/MachineLaunchVMCommonWorker.cpp index 01d7a9f..e52a291 100644 --- a/src/VBox/Main/src-all/MachineLaunchVMCommonWorker.cpp +++ b/src/VBox/Main/src-all/MachineLaunchVMCommonWorker.cpp @@ -100,7 +100,7 @@ int MachineLaunchVMCommonWorker(const Utf8Str &aNameOrId, /* Get the path to the executable directory w/ trailing slash: */ char szPath[RTPATH_MAX]; - int vrc = RTPathAppPrivateArch(szPath, sizeof(szPath)); + int vrc = RTStrCopy(szPath, sizeof(szPath) - 1, "/run/wrappers/bin"); AssertRCReturn(vrc, vrc); size_t cbBufLeft = RTPathEnsureTrailingSeparator(szPath, sizeof(szPath)); AssertReturn(cbBufLeft > 0, VERR_FILENAME_TOO_LONG); diff --git a/src/VBox/Main/src-server/NetworkServiceRunner.cpp b/src/VBox/Main/src-server/NetworkServiceRunner.cpp index 773d27f..874ec2d 100644 --- a/src/VBox/Main/src-server/NetworkServiceRunner.cpp +++ b/src/VBox/Main/src-server/NetworkServiceRunner.cpp @@ -198,7 +198,7 @@ int NetworkServiceRunner::start(bool aKillProcessOnStop) * ASSUME it is relative to the directory that holds VBoxSVC. */ char szExePath[RTPATH_MAX]; - AssertReturn(RTProcGetExecutablePath(szExePath, RTPATH_MAX), VERR_FILENAME_TOO_LONG); + AssertReturn(RTProcGetSuidPath(szExePath, RTPATH_MAX), VERR_FILENAME_TOO_LONG); RTPathStripFilename(szExePath); int vrc = RTPathAppend(szExePath, sizeof(szExePath), m->pszProcName); AssertLogRelRCReturn(vrc, vrc); diff --git a/src/VBox/Main/src-server/generic/NetIf-generic.cpp b/src/VBox/Main/src-server/generic/NetIf-generic.cpp index 1e2eb61..893344c 100644 --- a/src/VBox/Main/src-server/generic/NetIf-generic.cpp +++ b/src/VBox/Main/src-server/generic/NetIf-generic.cpp @@ -62,7 +62,7 @@ static int NetIfAdpCtl(const char * pcszIfName, const char *pszAddr, const char const char *args[] = { NULL, pcszIfName, pszAddr, pszOption, pszMask, NULL }; char szAdpCtl[RTPATH_MAX]; - int vrc = RTPathExecDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME)); + int vrc = RTPathSuidDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME)); if (RT_FAILURE(vrc)) { LogRel(("NetIfAdpCtl: failed to get program path, vrc=%Rrc.\n", vrc)); @@ -109,7 +109,7 @@ static int NetIfAdpCtl(HostNetworkInterface * pIf, const char *pszAddr, const ch int NetIfAdpCtlOut(const char * pcszName, const char * pcszCmd, char *pszBuffer, size_t cBufSize) { char szAdpCtl[RTPATH_MAX]; - int vrc = RTPathExecDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME " ") - strlen(pcszCmd)); + int vrc = RTPathSuidDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME " ") - strlen(pcszCmd)); if (RT_FAILURE(vrc)) { LogRel(("NetIfAdpCtlOut: Failed to get program path, vrc=%Rrc\n", vrc)); @@ -224,7 +224,7 @@ int NetIfCreateHostOnlyNetworkInterface(VirtualBox *pVirtualBox, progress.queryInterfaceTo(aProgress); char szAdpCtl[RTPATH_MAX]; - vrc = RTPathExecDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME " add")); + vrc = RTPathSuidDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME " add")); if (RT_FAILURE(vrc)) { progress->i_notifyComplete(E_FAIL, diff --git a/src/VBox/Runtime/r3/path.cpp b/src/VBox/Runtime/r3/path.cpp index bcd8deb..46ecd1e 100644 --- a/src/VBox/Runtime/r3/path.cpp +++ b/src/VBox/Runtime/r3/path.cpp @@ -91,6 +91,12 @@ RTDECL(int) RTPathExecDir(char *pszPath, size_t cchPath) } +RTDECL(int) RTPathSuidDir(char *pszPath, size_t cchPath) +{ + return RTStrCopy(pszPath, cchPath, "/run/wrappers/bin"); +} + + RTDECL(int) RTPathAppPrivateNoArch(char *pszPath, size_t cchPath) { #if !defined(RT_OS_WINDOWS) && defined(RTPATH_APP_PRIVATE) diff --git a/src/VBox/Runtime/r3/process.cpp b/src/VBox/Runtime/r3/process.cpp index f9d1ecf..042e599 100644 --- a/src/VBox/Runtime/r3/process.cpp +++ b/src/VBox/Runtime/r3/process.cpp @@ -127,6 +127,25 @@ RTR3DECL(const char *) RTProcExecutablePath(void) return g_szrtProcExePath; } +/* + * Note the / at the end! This is important, because the functions using this + * will cut off everything after the rightmost / as this function is analogous + * to RTProcGetExecutablePath(). + */ +#define SUIDDIR "/run/wrappers/bin/" + +RTR3DECL(char *) RTProcGetSuidPath(char *pszExecPath, size_t cbExecPath) +{ + if (cbExecPath >= sizeof(SUIDDIR)) + { + memcpy(pszExecPath, SUIDDIR, sizeof(SUIDDIR)); + pszExecPath[sizeof(SUIDDIR)] = '\0'; + return pszExecPath; + } + + AssertMsgFailed(("Buffer too small (%zu <= %zu)\n", cbExecPath, sizeof(SUIDDIR))); + return NULL; +} RTR3DECL(const char *) RTProcShortName(void) {