1 files changed, 66 insertions, 0 deletions
diff --git a/CVE-2023-45145.patch b/CVE-2023-45145.patch
new file mode 100644
index 0000000..96e4b17
--- /dev/null
+++ b/CVE-2023-45145.patch
@@ -0,0 +1,66 @@
+From 7f486ea6eebf0afce74f2e59763b9b82b78629dc Mon Sep 17 00:00:00 2001
+From: Yossi Gottlieb <yossigo@gmail.com>
+Date: Wed, 11 Oct 2023 22:45:34 +0300
+Subject: [PATCH] Fix issue of listen before chmod on Unix sockets
+ (CVE-2023-45145)
+
+Before this commit, Unix socket setup performed chmod(2) on the socket
+file after calling listen(2). Depending on what umask is used, this
+could leave the file with the wrong permissions for a short period of
+time. As a result, another process could exploit this race condition and
+establish a connection that would otherwise not be possible.
+
+We now make sure the socket permissions are set up prior to calling
+listen(2).
+
+(cherry picked from commit a11b3bc34a054818f2ac70e50adfc542ca1cba42)
+---
+ src/anet.c | 11 ++++++-----
+ 1 file changed, 6 insertions(+), 5 deletions(-)
+
+diff --git a/src/anet.c b/src/anet.c
+index dc88eb7..d0db80f 100644
+--- a/src/anet.c
++++ b/src/anet.c
+@@ -437,13 +437,16 @@ int anetWrite(int fd, char *buf, int count)
+     return totlen;
+ }
+ 
+-static int anetListen(char *err, int s, struct sockaddr *sa, socklen_t len, int backlog) {
++static int anetListen(char *err, int s, struct sockaddr *sa, socklen_t len, int backlog, mode_t perm) {
+     if (bind(s,sa,len) == -1) {
+         anetSetError(err, "bind: %s", strerror(errno));
+         close(s);
+         return ANET_ERR;
+     }
+ 
++    if (sa->sa_family == AF_LOCAL && perm)
++        chmod(((struct sockaddr_un *) sa)->sun_path, perm);
++
+     if (listen(s, backlog) == -1) {
+         anetSetError(err, "listen: %s", strerror(errno));
+         close(s);
+@@ -484,7 +487,7 @@ static int _anetTcpServer(char *err, int port, char *bindaddr, int af, int backl
+ 
+         if (af == AF_INET6 && anetV6Only(err,s) == ANET_ERR) goto error;
+         if (anetSetReuseAddr(err,s) == ANET_ERR) goto error;
+-        if (anetListen(err,s,p->ai_addr,p->ai_addrlen,backlog) == ANET_ERR) s = ANET_ERR;
++        if (anetListen(err,s,p->ai_addr,p->ai_addrlen,backlog,0) == ANET_ERR) s = ANET_ERR;
+         goto end;
+     }
+     if (p == NULL) {
+@@ -521,10 +524,8 @@ int anetUnixServer(char *err, char *path, mode_t perm, int backlog)
+     memset(&sa,0,sizeof(sa));
+     sa.sun_family = AF_LOCAL;
+     strncpy(sa.sun_path,path,sizeof(sa.sun_path)-1);
+-    if (anetListen(err,s,(struct sockaddr*)&sa,sizeof(sa),backlog) == ANET_ERR)
++    if (anetListen(err,s,(struct sockaddr*)&sa,sizeof(sa),backlog,perm) == ANET_ERR)
+         return ANET_ERR;
+-    if (perm)
+-        chmod(sa.sun_path, perm);
+     return s;
+ }
+ 
+-- 
+2.33.0
+