Month: May 2019

ASA-2019-00307 – BitBucket: Path traversal in the migration tool that leads to Remote Code Execution (RCE)

Posted on by Allele Security Intelligence in Alerts

Bitbucket Data Center had a path traversal vulnerability in the Data Center migration tool. A remote attacker with authenticated user with admin permissions can exploit this path traversal vulnerability to write files to arbitrary locations which can lead to remote code execution on systems that run a vulnerable version of Bitbucket Data Center. Bitbucket Server versions without a Data Center license are not vulnerable to this vulnerability.

ASA-2019-00306 – curl: TFTP receive buffer overflow

Posted on by Allele Security Intelligence in Alerts

libcurl contains a heap buffer overflow in the function (`tftp_receive_packet()`) that recevives data from a TFTP server. It calls `recvfrom()` with the default size for the buffer rather than with the size that was used to allocate it. Thus, the content that might overwrite the heap memory is entirely controlled by the server. The flaw exists if the user selects to use a "blksize" of 504 or smaller (default is 512). The smaller size that is used, the larger the possible overflow becomes. Users chosing a smaller size than default should be rare as the primary use case for changing the size is to make it larger.

ASA-2019-00305 – curl: Integer overflows in curl_url_set()

Posted on by Allele Security Intelligence in Alerts

libcurl contains two integer overflows in the curl_url_set() function that if triggered, can lead to a too small buffer allocation and a subsequent heap buffer overflow. The flaws only exist on 32 bit architectures and require excessive string input lengths.