[Bug network/28768] New: Buffer overflow in svcunix_create with long pathnames

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=28768

            Bug ID: 28768
           Summary: Buffer overflow in svcunix_create with long pathnames
           Product: glibc
           Version: 2.34
            Status: NEW
          Severity: normal
          Priority: P2
         Component: network
          Assignee: unassigned at sourceware dot org
          Reporter: fweimer at redhat dot com
  Target Milestone: ---
             Flags: security+

This is similar to bug 22542, but in different code:

SVCXPRT *
svcunix_create (int sock, u_int sendsize, u_int recvsize, char *path)
{
  bool_t madesock = FALSE;
  SVCXPRT *xprt;
  struct unix_rendezvous *r;
  struct sockaddr_un addr;
  socklen_t len = sizeof (struct sockaddr_in);

  if (sock == RPC_ANYSOCK)
    {
      if ((sock = __socket (AF_UNIX, SOCK_STREAM, 0)) < 0)
        {
          perror (_("svc_unix.c - AF_UNIX socket creation problem"));
          return (SVCXPRT *) NULL;
        }
      madesock = TRUE;
    }
  memset (&addr, '\0', sizeof (addr));
  addr.sun_family = AF_UNIX;
  len = strlen (path) + 1;
  memcpy (addr.sun_path, path, len);
  len += sizeof (addr.sun_family);
[…]

There is no length check, either.

-- 
You are receiving this mail because:
You are on the CC list for the bug.