https://issues.apache.org/bugzilla/show_bug.cgi?id=54560
Bug ID: 54560
Summary: Potential segfault on return from
ap_server_root_relative
Product: Apache httpd-2
Version: 2.4.1
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Runtime Config
Assignee: [email protected]
Reporter: [email protected]
Classification: Unclassified
The ap_process_fnmatch_configs function in server/config.c has the following
code:
if ((ap_server_pre_read_config->nelts
|| ap_server_post_read_config->nelts)
&& !(strcmp(fname, ap_server_root_relative(ptemp,
SERVER_CONFIG_FILE)))) {
apr_finfo_t finfo;
if (apr_stat(&finfo, fname, APR_FINFO_LINK | APR_FINFO_TYPE, ptemp) !=
APR_SUCCESS)
return NULL;
}
The ap_server_root_relative function could potentially return NULL which would
result in a segmentation fault within strcmp.
This bug is related to the following bugs:
- https://issues.apache.org/bugzilla/show_bug.cgi?id=52816
- https://issues.apache.org/bugzilla/show_bug.cgi?id=39722
This code is first seen in 2.4.1 and still exists in 2.5-HEAD.
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