Comments (8)
This looks like it could be caused by the php binary/library being compiled without RELRO. I have pushed a commit that addresses this issue, please pull the code and try again.
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看来这可能是由于在没有RELRO的情况下编译php二进制/库引起的。我已经推送了一个致力于解决此问题的提交,请提取代码,然后重试。
I tested the error on the real target webllshell as follows
I tested it in the PHP environment of the local Windows and reported the following errors
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This looks like it could be caused by the php binary/library being compiled without RELRO. I have pushed a commit that addresses this issue, please pull the code and try again.
Can you tell me what kind of test you are in?
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This looks like it could be caused by the php binary/library being compiled without RELRO. I have pushed a commit that addresses this issue, please pull the code and try again.
The code used in this article was tested in Windows local PHP environment as follows
https://bugs.php.net/bug.php?id=77843
from exploits.
Even though it's possible to exploit this vulnerability on Windows, this PoC is for Linux x64 only, I should have clarified that.
The exploit was tested on various php7.1-7.3 builds for Ubuntu and CentOS with fpm/cli/apache2 server APIs. As stated in README, it's not guaranteed to work everywhere. I can, however, try to debug the problem if you can provide the binary that's causing issues.
Alternatively, you can try incrementing the $n_alloc
variable.
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php 7.2.21
Couldn't get basic_functions address
base:
4194304
elf
Array
(
[0] => 11988256
[1] => 5693068
[2] => 242184
)
any ideas ?
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Looks like the ELF parsing stage gives wrong results. Can you provide the php binary that's having issues with this PoC?
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Fixed in b160b06.
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