openSSL 1.1.1b compatibility with GLIBC

[Jakob Bohm]

On 01/03/2019 12:38, Chethan Kumar wrote:
>
> Dear all,
>
> In need of some assistance. I compiled openssl1.1.1b on Debian and 
> executed openssl commands on another Debian machine.
>
> Its giving below error:
>
> openssl: */lib/i386-linux-gnu/libc.so.6: version `GLIBC_2.25' not 
> found (required by /home/SYSROM_SRC/build/release/lib/libcrypto.so.1.1)*
>
Debian glibc versions with a given so-name (such as
libc.so.6) are backwards compatible, but not forward
compatible.

Thus compiling against glibc from an older version of Debian 8
(jessie) such as Debian glibc 2.19-18 should work with glibc
from a later version (such as "Debian GLIBC 2.19-18+deb8u10").
  But the other way around is not guaranteed to work, nor is
running with a non-Debian glibc when compiled against a Debian
glibc.

Your executing environment seems to contain a glibc which is
a plain version 2.19 with none of the Debian fixes added
between May 2014 and 16 Jun 2017 (see the file
/usr/share/doc/libc6/changelog.Debian.gz).

The package versions that need to match (or be in the correct
order) are package libc6-dev (when compiling) being same or
older than libc6 when running.

The command "dpkg --compare-versions" compares package
version numbers according to the correct rules.

When using the Debian packaging tools to package a compiled
file such as libcrypto.so.1.1, the resulting .deb file will
typically instruct the system to not install it unless a new
enough glibc is installed in the executing environment.

> Even when I start HTTP services which uses openssl gives same error.
>
> Starting webserverhttpd: Syntax error on line 208 of 
> /config/httpd.conf: Cannot load lib/mod_ssl.so into server: 
> */lib/i386-linux-gnu/libc.so.6: version `GLIBC_2.25' not found 
> (required by /usr/local/ebx/lib/libcrypto.so.1.1)*
>
> Environment used for the same is below:
>
> *Compilation Environment:*
>
> cat /proc/version
>
> Linux version 3.16.0-6-amd64 (debian-kernel at lists.debian.org) (gcc 
> version 4.9.2 (Debian 4.9.2-10+deb8u1) )
>
> ldd --version
>
> ldd (Debian GLIBC 2.19-18+deb8u10) 2.19
>
> **
>
> *Executing Environment:*
>
> cat /proc/version
>
> Linux version 4.4.130-cip23-eBN-kernel (jenkins at skelios-plt) (gcc 
> version 4.9.2 (Debian 4.9.2-10+deb8u1) )
>
> ldd --version
>
> ldd (GNU libc) 2.19
>
> I need to know, how did the compilation was successful though GLIBC 
> version was less and what should be done to make it work apart from 
> updating GLIBC.
>
>

Enjoy

Jakob
-- 
Jakob Bohm, CIO, Partner, WiseMo A/S.  https://www.wisemo.com
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