The find_option function in option.cc in Ledger 3.1.1 allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file.

The ledger::parse_date_mask_routine function in times.cc in Ledger 3.1.1 allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file.

An exploitable buffer overflow vulnerability exists in the tag parsing functionality of Ledger-CLI 3.1.1. A specially crafted journal file can cause an integer underflow resulting in code execution. An attacker can construct a malicious journal file to trigger this vulnerability.

An exploitable use-after-free vulnerability exists in the account parsing component of the Ledger-CLI 3.1.1. A specially crafted ledger file can cause a use-after-free vulnerability resulting in arbitrary code execution. An attacker can convince a user to load a journal file to trigger this vulnerability.