owasp-modsecurity / owasp-modsecurity/ModSecurity

I'm having trouble importing the modsecurity module into nginx.

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Description

Hey,
Even though I made all the installations perfectly, the load module part I added to the conf configuration does not work at all.

**ldd** =         libcurl-gnutls.so.4 => /lib/x86_64-linux-gnu/libcurl-gnutls.so.4 (0x0000788ec6745000)
                          libGeoIP.so.1 => /lib/x86_64-linux-gnu/libGeoIP.so.1 (0x0000788ec6a82000)
                          libxml2.so.2 => /lib/x86_64-linux-gnu/libxml2.so.2 (0x0000788ec6563000)
                          liblua5.3.so.0 => /lib/x86_64-linux-gnu/liblua5.3.so.0 (0x0000788ec6a44000)
                          libpcre2-8.so.0 => /lib/x86_64-linux-gnu/libpcre2-8.so.0 (0x0000788ec64c9000)
                          libmaxminddb.so.0 => /lib/x86_64-linux-gnu/libmaxminddb.so.0 (0x0000788ec6a3d000)
                          libfuzzy.so.2 => /lib/x86_64-linux-gnu/libfuzzy.so.2 (0x0000788ec6a36000)
                          libyajl.so.2 => /lib/x86_64-linux-gnu/libyajl.so.2 (0x0000788ec6a2a000)
                          libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x0000788ec6200000)
                          /lib64/ld-linux-x86-64.so.2 (0x0000788ec6cc6000)
                          libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x0000788ec649b000)
                          libnghttp2.so.14 => /lib/x86_64-linux-gnu/libnghttp2.so.14 (0x0000788ec61d5000)
                          libidn2.so.0 => /lib/x86_64-linux-gnu/libidn2.so.0 (0x0000788ec61b3000)
                          librtmp.so.1 => /lib/x86_64-linux-gnu/librtmp.so.1 (0x0000788ec6195000)
                          libssh.so.4 => /lib/x86_64-linux-gnu/libssh.so.4 (0x0000788ec6124000)
                          libpsl.so.5 => /lib/x86_64-linux-gnu/libpsl.so.5 (0x0000788ec6a12000)
                          libnettle.so.8 => /lib/x86_64-linux-gnu/libnettle.so.8 (0x0000788ec60cf000)
                          libgnutls.so.30 => /lib/x86_64-linux-gnu/libgnutls.so.30 (0x0000788ec5ed5000)
                          libgssapi_krb5.so.2 => /lib/x86_64-linux-gnu/libgssapi_krb5.so.2 (0x0000788ec5e81000)
                          libldap.so.2 => /lib/x86_64-linux-gnu/libldap.so.2 (0x0000788ec5e24000)
                          liblber.so.2 => /lib/x86_64-linux-gnu/liblber.so.2 (0x0000788ec648b000)
                          libzstd.so.1 => /lib/x86_64-linux-gnu/libzstd.so.1 (0x0000788ec5d6a000)
                          libbrotlidec.so.1 => /lib/x86_64-linux-gnu/libbrotlidec.so.1 (0x0000788ec5d5c000)
                          libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x0000788ec5d40000)
                          libicuuc.so.74 => /lib/x86_64-linux-gnu/libicuuc.so.74 (0x0000788ec5a00000)
                          liblzma.so.5 => /lib/x86_64-linux-gnu/liblzma.so.5 (0x0000788ec5d0e000)
                          libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x0000788ec5c25000)
                          libunistring.so.5 => /lib/x86_64-linux-gnu/libunistring.so.5 (0x0000788ec5853000)
                          libhogweed.so.6 => /lib/x86_64-linux-gnu/libhogweed.so.6 (0x0000788ec580b000)
                          libgmp.so.10 => /lib/x86_64-linux-gnu/libgmp.so.10 (0x0000788ec5787000)
                          libcrypto.so.3 => /lib/x86_64-linux-gnu/libcrypto.so.3 (0x0000788ec5200000)
                          libp11-kit.so.0 => /lib/x86_64-linux-gnu/libp11-kit.so.0 (0x0000788ec505c000)
                          libtasn1.so.6 => /lib/x86_64-linux-gnu/libtasn1.so.6 (0x0000788ec5c0f000)
                          libkrb5.so.3 => /lib/x86_64-linux-gnu/libkrb5.so.3 (0x0000788ec4f93000)
                          libk5crypto.so.3 => /lib/x86_64-linux-gnu/libk5crypto.so.3 (0x0000788ec575b000)
                          libcom_err.so.2 => /lib/x86_64-linux-gnu/libcom_err.so.2 (0x0000788ec647f000)
                          libkrb5support.so.0 => /lib/x86_64-linux-gnu/libkrb5support.so.0 (0x0000788ec574e000)
                          libsasl2.so.2 => /lib/x86_64-linux-gnu/libsasl2.so.2 (0x0000788ec5734000)
                          libbrotlicommon.so.1 => /lib/x86_64-linux-gnu/libbrotlicommon.so.1 (0x0000788ec4f70000)
                          libicudata.so.74 => /lib/x86_64-linux-gnu/libicudata.so.74 (0x0000788ec3200000)
                          libffi.so.8 => /lib/x86_64-linux-gnu/libffi.so.8 (0x0000788ec5728000)
                          libkeyutils.so.1 => /lib/x86_64-linux-gnu/libkeyutils.so.1 (0x0000788ec571f000)
                          libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x0000788ec31ed000)

------------------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------       
                          **_Problem Info_** = sudo nginx -t
2024/12/23 10:19:30 [emerg] 2171186#2171186: dlopen() "/etc/nginx/modules/ngx_http_modsecurity_module.so" failed (/etc/nginx/modules/ngx_http_modsecurity_module.so: undefined symbol: pcre_malloc) in /etc/nginx/nginx.conf:6
nginx: configuration file /etc/nginx/nginx.conf test failed
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------     
**_nginx installed version_** = nginx-1.24.0 

Can you help me solve my problem?
Thanks in advance.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the failure with sudo nginx -t and inspect the module load entry in /etc/nginx/nginx.conf together with /etc/nginx/modules/ngx_http_modsecurity_module.so. Done means the module loads successfully and nginx -t reports a valid configuration without the undefined-symbol error.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, nginx
Domain
security
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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