RE: new release 3.4.0 - critical security release

Here is my fix for the situation:

 

diff --git a/popt/findme.c b/popt/findme.c

index ac4cbae..4fe8a18 100644

--- a/popt/findme.c

+++ b/popt/findme.c

@@ -25,12 +25,23 @@ const char * findProgramPath(const char * argv0)

     if (path == NULL) return NULL;

 

     bufsize = strlen(path) + 1;

+#if defined __TANDEM

+    start = pathbuf = malloc(bufsize);

+#else

     start = pathbuf = alloca(bufsize);

+#endif

     if (pathbuf == NULL) return NULL;  /* XXX can't happen */

     strlcpy(pathbuf, path, bufsize);

     bufsize += sizeof "/" - 1 + strlen(argv0);

     buf = malloc(bufsize);

+#if defined __TANDEM

+    if (buf == NULL) {

+       free(start);

+       return NULL;    /* XXX can't happen */

+    }

+#else

     if (buf == NULL) return NULL;      /* XXX can't happen */

+#endif

 

     chptr = NULL;

     /*@-branchstate@*/

@@ -39,8 +50,15 @@ const char * findProgramPath(const char * argv0)

            *chptr = '\0';

        snprintf(buf, bufsize, "%s/%s", start, argv0);

 

+#if defined __TANDEM

+       if (!access(buf, X_OK)) {

+           free(start);

+           return buf;

+       }

+#else

        if (!access(buf, X_OK))

            return buf;

+#endif

 

        if (chptr)

            start = chptr + 1;

@@ -51,5 +69,8 @@ const char * findProgramPath(const char * argv0)

 

     free(buf);

 

+#if defined __TANDEM

+    free(start);

+#endif

     return NULL;

}

 

I would respectfully ask that it be included ASAP.

 

Thanks,

Randall

 

From: rsync <[email protected]> On Behalf Of Randall S. Becker via rsync
Sent: January 14, 2025 6:09 PM
To: 'rsync.project' <[email protected]>
Cc: [email protected]
Subject: RE: new release 3.4.0 - critical security release

 

This happens on NonStop x86 and ia64. I have been building/packaging Rsync for years – almost a decade in fact. I think this happened once before this year, in fact.

 

It is equivalent to the more portable malloc/free, which I would prefer to have in this series even if it has to be wrapped in a #if defined (__TANDEM) block.

 

This call is considered not portable and allocates on the stack instead of the heap. This can cause performance issues as memory management on the heap is generally given more attention by runtimes. The reason it is not supported on NonStop is that the c99 compiler does not generate code for allocating on the stack on this machine.

 

Please forgive me here, but adding a new dependency for a critical security fix is rather painful.

 

--Randall

 

 

From: rsync.project <[email protected]> 
Sent: January 14, 2025 4:31 PM
To: [email protected]
Cc: [email protected]
Subject: Re: new release 3.4.0 - critical security release

 

the alloca comes from the new popt release. What system are you having an issue with?

 

 

On Wed, 15 Jan 2025 at 07:16, <[email protected] <mailto:[email protected]> > wrote:

A new dependency was added since 3.3, alloca(), which is not portable. Is there a way around this?

Thanks,

Randall

 

From: rsync <[email protected] <mailto:[email protected]> > On Behalf Of rsync.project via rsync
Sent: January 14, 2025 2:49 PM
To: [email protected] <mailto:[email protected]> 
Cc: [email protected] <mailto:[email protected]> 
Subject: new release 3.4.0 - critical security release

 

We have just released version 3.4.0 of rsync. This release fixes 6 security vulnerabilities found by two groups of security researchers.

 

You can find the new release links here:

 

 - https://rsync.samba.org/

 - https://download.samba.org/pub/rsync/src/

 

For details on the vulnerabilities please see this CERT advisory:

 

https://kb.cert.org/vuls/id/952657

 

The various distros should be doing security releases today

Many thanks to Simon Scannell, Pedro Gallegos, and Jasiel Spelman at Google Cloud Vulnerability Research and Aleksei Gorban (Loqpa) for discovering these vulnerabilities and working with the rsync project to develop and test fixes.

 

Also many thanks to Wayne Davison for assisting with the release process as this is the first release I've done since 2002 when Wayne took over as the rsync maintainer.

 

Andrew Tridgell

rsync maintainer (again!)

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