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libproxy: Fix for CVE-2012-4504

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Reference:https://code.google.com/p/libproxy/source/detail?r=853

Stack-based buffer overflow in the url::get_pac function in url.cpp
in libproxy 0.4.x before 0.4.9 allows remote servers to have an
unspecified impact via a large proxy.pac file.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-4504

[YOCTO #3487]

(From OE-Core rev: 821401df8cd79e4878ad87f918b1ce8d0da141ec)

Signed-off-by: yanjun.zhu <yanjun.zhu@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
yanjun.zhu
2012-11-30 19:08:56 +08:00
committed by Richard Purdie
parent bca7285d84
commit 07d689aa87
2 changed files with 30 additions and 0 deletions
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29
meta/recipes-support/libproxy/libproxy/libproxy-0.4.7-CVE-2012-4504.patch Normal file
View File

@@ -0,0 +1,29 @@
Upstream-Status: Backport
libproxy - CVE-2012-4504:
Reference:https://code.google.com/p/libproxy/source/detail?r=853
Stack-based buffer overflow in the url::get_pac function in url.cpp
in libproxy 0.4.x before 0.4.9 allows remote servers to have an
unspecified impact via a large proxy.pac file.
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-4504
Signed-off-by: yanjun.zhu <yanjun.zhu@windriver.com>
diff -urpN a/libproxy/url.cpp b/libproxy/url.cpp
--- a/libproxy/url.cpp 2012-11-26 10:08:47.000000000 +0800
+++ b/libproxy/url.cpp 2012-11-26 10:05:54.000000000 +0800
@@ -472,9 +472,10 @@ char* url::get_pac() {
// Add this chunk to our content length,
// ensuring that we aren't over our max size
content_length += chunk_length;
- if (content_length >= PAC_MAX_SIZE) break;
}
+ if (content_length >= PAC_MAX_SIZE) break;
+
while (recvd != content_length) {
int r = recv(sock, buffer + recvd, content_length - recvd, 0);
if (r < 0) break;