aboutsummaryrefslogtreecommitdiffstats
path: root/main/curl/CVE-2016-8620.patch
diff options
context:
space:
mode:
Diffstat (limited to 'main/curl/CVE-2016-8620.patch')
-rw-r--r--main/curl/CVE-2016-8620.patch205
1 files changed, 205 insertions, 0 deletions
diff --git a/main/curl/CVE-2016-8620.patch b/main/curl/CVE-2016-8620.patch
new file mode 100644
index 0000000000..c8c2cd1010
--- /dev/null
+++ b/main/curl/CVE-2016-8620.patch
@@ -0,0 +1,205 @@
+From 52f3e1d1092c81a4f574c9fc6cb3818b88434c8d Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Mon, 3 Oct 2016 17:27:16 +0200
+Subject: [PATCH 1/3] range: prevent negative end number in a glob range
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+CVE-2016-8620
+
+Bug: https://curl.haxx.se/docs/adv_20161102F.html
+Reported-by: Luật Nguyễn
+---
+ src/tool_urlglob.c | 7 +++++++
+ 1 file changed, 7 insertions(+)
+
+diff --git a/src/tool_urlglob.c b/src/tool_urlglob.c
+index a357b8b..64c75ba 100644
+--- a/src/tool_urlglob.c
++++ b/src/tool_urlglob.c
+@@ -255,10 +255,16 @@ static CURLcode glob_range(URLGlob *glob, char **patternp,
+ else {
+ if(*endp != '-')
+ endp = NULL;
+ else {
+ pattern = endp+1;
++ while(*pattern && ISBLANK(*pattern))
++ pattern++;
++ if(!ISDIGIT(*pattern)) {
++ endp = NULL;
++ goto fail;
++ }
+ errno = 0;
+ max_n = strtoul(pattern, &endp, 10);
+ if(errno || (*endp == ':')) {
+ pattern = endp+1;
+ errno = 0;
+@@ -275,10 +281,11 @@ static CURLcode glob_range(URLGlob *glob, char **patternp,
+ else
+ endp = NULL;
+ }
+ }
+
++ fail:
+ *posp += (pattern - *patternp);
+
+ if(!endp || (min_n > max_n) || (step_n > (max_n - min_n)) || !step_n)
+ /* the pattern is not well-formed */
+ return GLOBERROR("bad range", *posp, CURLE_URL_MALFORMAT);
+--
+2.9.3
+
+
+From e97ebe97c2b53d3617c1f4082a2aaa4f1b593ef9 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Mon, 3 Oct 2016 18:23:22 +0200
+Subject: [PATCH 2/3] glob_next_url: make sure to stay within the given output
+ buffer
+
+---
+ src/tool_urlglob.c | 17 +++++++++++------
+ 1 file changed, 11 insertions(+), 6 deletions(-)
+
+diff --git a/src/tool_urlglob.c b/src/tool_urlglob.c
+index 64c75ba..c45a78b 100644
+--- a/src/tool_urlglob.c
++++ b/src/tool_urlglob.c
+@@ -429,10 +429,11 @@ CURLcode glob_url(URLGlob** glob, char* url, unsigned long *urlnum,
+ *glob = NULL;
+
+ glob_buffer = malloc(strlen(url) + 1);
+ if(!glob_buffer)
+ return CURLE_OUT_OF_MEMORY;
++ glob_buffer[0]=0;
+
+ glob_expand = calloc(1, sizeof(URLGlob));
+ if(!glob_expand) {
+ Curl_safefree(glob_buffer);
+ return CURLE_OUT_OF_MEMORY;
+@@ -546,33 +547,37 @@ CURLcode glob_next_url(char **globbed, URLGlob *glob)
+ for(i = 0; i < glob->size; ++i) {
+ pat = &glob->pattern[i];
+ switch(pat->type) {
+ case UPTSet:
+ if(pat->content.Set.elements) {
+- len = strlen(pat->content.Set.elements[pat->content.Set.ptr_s]);
+ snprintf(buf, buflen, "%s",
+ pat->content.Set.elements[pat->content.Set.ptr_s]);
++ len = strlen(buf);
+ buf += len;
+ buflen -= len;
+ }
+ break;
+ case UPTCharRange:
+- *buf++ = pat->content.CharRange.ptr_c;
++ if(buflen) {
++ *buf++ = pat->content.CharRange.ptr_c;
++ *buf = '\0';
++ buflen--;
++ }
+ break;
+ case UPTNumRange:
+- len = snprintf(buf, buflen, "%0*ld",
+- pat->content.NumRange.padlength,
+- pat->content.NumRange.ptr_n);
++ snprintf(buf, buflen, "%0*ld",
++ pat->content.NumRange.padlength,
++ pat->content.NumRange.ptr_n);
++ len = strlen(buf);
+ buf += len;
+ buflen -= len;
+ break;
+ default:
+ printf("internal error: invalid pattern type (%d)\n", (int)pat->type);
+ return CURLE_FAILED_INIT;
+ }
+ }
+- *buf = '\0';
+
+ *globbed = strdup(glob->glob_buffer);
+ if(!*globbed)
+ return CURLE_OUT_OF_MEMORY;
+
+--
+2.9.3
+
+
+From 9ce377051290c83176f235b526b87904cad6b388 Mon Sep 17 00:00:00 2001
+From: Daniel Stenberg <daniel@haxx.se>
+Date: Tue, 4 Oct 2016 17:25:09 +0200
+Subject: [PATCH 3/3] range: reject char globs with missing end like '[L-]'
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+... which previously would lead to out of boundary reads.
+
+Reported-by: Luật Nguyễn
+---
+ src/tool_urlglob.c | 34 +++++++++++++++++++---------------
+ 1 file changed, 19 insertions(+), 15 deletions(-)
+
+diff --git a/src/tool_urlglob.c b/src/tool_urlglob.c
+index c45a78b..09d21b6 100644
+--- a/src/tool_urlglob.c
++++ b/src/tool_urlglob.c
+@@ -186,36 +186,40 @@ static CURLcode glob_range(URLGlob *glob, char **patternp,
+
+ if(ISALPHA(*pattern)) {
+ /* character range detected */
+ char min_c;
+ char max_c;
++ char end_c;
+ int step=1;
+
+ pat->type = UPTCharRange;
+
+- rc = sscanf(pattern, "%c-%c", &min_c, &max_c);
++ rc = sscanf(pattern, "%c-%c%c", &min_c, &max_c, &end_c);
+
+- if((rc == 2) && (pattern[3] == ':')) {
+- char *endp;
+- unsigned long lstep;
+- errno = 0;
+- lstep = strtoul(&pattern[4], &endp, 10);
+- if(errno || (*endp != ']'))
+- step = -1;
+- else {
+- pattern = endp+1;
+- step = (int)lstep;
+- if(step > (max_c - min_c))
++ if(rc == 3) {
++ if(end_c == ':') {
++ char *endp;
++ unsigned long lstep;
++ errno = 0;
++ lstep = strtoul(&pattern[4], &endp, 10);
++ if(errno || (*endp != ']'))
+ step = -1;
++ else {
++ pattern = endp+1;
++ step = (int)lstep;
++ if(step > (max_c - min_c))
++ step = -1;
++ }
+ }
++ else if(end_c != ']')
++ /* then this is wrong */
++ rc = 0;
+ }
+- else
+- pattern += 4;
+
+ *posp += (pattern - *patternp);
+
+- if((rc != 2) || (min_c >= max_c) || ((max_c - min_c) > ('z' - 'a')) ||
++ if((rc != 3) || (min_c >= max_c) || ((max_c - min_c) > ('z' - 'a')) ||
+ (step <= 0) )
+ /* the pattern is not well-formed */
+ return GLOBERROR("bad range", *posp, CURLE_URL_MALFORMAT);
+
+ /* if there was a ":[num]" thing, use that as step or else use 1 */
+--
+2.9.3
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-11 18:52:15 +0000