Security #5024: ftp: GetLine function buffers data indefinitely if 0x0a was not found int the frag'd input - Suricata - Open Information Security Foundation

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Security #5024

closed

ftp: GetLine function buffers data indefinitely if 0x0a was not found int the frag'd input

Added by Shivani Bhardwaj over 3 years ago. Updated almost 3 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Jason Ish

Target version:

7.0.0-beta1

Affected Versions:

Label:

CVE:

Git IDs:

cf8ed576e09a68886760259055e309e51bf5bec3

Severity:

HIGH

Disclosure Date:

Description

We tend to execute


           ptmp = FTPRealloc(line_state->db, line_state->db_len,
                             (line_state->db_len + state->input_len));
            if (ptmp == NULL) {
                FTPFree(line_state->db, line_state->db_len);
                line_state->db = NULL;
                line_state->db_len = 0; 
                return -1;
            }
            line_state->db = ptmp;

            memcpy(line_state->db + line_state->db_len,
                   state->input, state->input_len);
            line_state->db_len += state->input_len;
        }    
        state->input += state->input_len;
        state->input_len = 0;

indefinitely.

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