Unhandled exception: cannot add/remove handle - multi_perform() already running

[virgilhem]

Versions:

• Python 3.8.1
• Wfuzz 2.4.4
• Pyycurl 7.43.0.4
• Six 1.13.0
• Chardet 3.0.4
• Pyparsing 2.4.6
• Future 0.18.2

$ wfuzz -v -w wordlist/general/common.txt http://google.com/FUZZ
libraries.FileLoader: CRITICAL __load_py_from_file. Filename: /home/user/.local/lib/python3.8/site-packages/wfuzz/plugins/payloads/bing.py Exception, msg=No module named 'shodan'
libraries.FileLoader: CRITICAL __load_py_from_file. Filename: /home/user/.local/lib/python3.8/site-packages/wfuzz/plugins/payloads/shodanp.py Exception, msg=No module named 'shodan'
********************************************************
* Wfuzz 2.4.4 - The Web Fuzzer                         *
********************************************************

Target: http://google.com/FUZZ
Total requests: 949

==================================================================================================================================================
ID           C.Time       Response   Lines    Word     Chars       Server                           Redirect                         
==================================================================================================================================================

000000001:   0.010s       404        11 L     72 W     1558 Ch                                                                       
000000002:   0.006s       404        11 L     72 W     1559 Ch                                                                       

Unhandled exception: cannot add/remove handle - multi_perform() already running

[hyperion-cs]

I have the same.

[mitjans]

I have the same issue. PyCurl version 7.43.0.4.

[mitjans]

I fixed it by downgrading Pycurl to the previous version (7.43.0.4).

1. pip uninstall pycurl
2. export PATH="/usr/local/opt/curl-openssl/bin:$PATH"
3. PYCURL_SSL_LIBRARY=openssl LDFLAGS="-L/usr/local/opt/openssl/lib" CPPFLAGS="-I/usr/local/opt/openssl/include" pip install --no-cache-dir -Iv pycurl==7.43.0.3

[xmendez]

I've created a new release pinning pycurl version while investigating the issue.
Thanks for sharing

[aaaguirrep]

I had the same issue and the workaround worked for me.

[aancw]

  Found existing installation: pycurl 7.43.0.5
ERROR: Cannot uninstall 'pycurl'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

For someone can't install old version of pycurl because of disutil error, you can install with this flag --ignore-installed

sudo pip install "pycurl<=7.43.0.3" --ignore-installed

[dridi]

Installing pycurl 7.43.0.3 is impossible on Fedora 32, the installation fails at the step where it tries to detect openssl:

$ pip install pycurl==7.43.0.4
<snip>
    ERROR: Command errored out with exit status 1:
<snip>
      File "/tmp/pip-install-dkl6_jls/pycurl/setup.py", line 381, in detect_ssl_lib_on_centos6
        dist_name, dist_version, _ = platform.dist()
    AttributeError: module 'platform' has no attribute 'dist'
    Using curl-config (libcurl 7.69.1)
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

No workaround on the cutting edge :(