A vulnerability, which was classified as problematic, was found in UPX up to 5.0.0. Affected is the function PackLinuxElf64::un_DT_INIT of the file src/p_lx_elf.cpp. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used. The patch is identified as e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2. It is recommended to apply a patch to fix this issue.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://vuldb.com/?id.301494 | third party advisory vdb entry technical description |
| https://vuldb.com/?ctiid.301494 | signature vdb entry permissions required |
| https://vuldb.com/?submit.522371 | third party advisory vdb entry |
| https://github.com/upx/upx/issues/898 | issue tracking exploit |
| https://github.com/upx/upx/issues/898#issuecomment-2734082143 | issue tracking exploit |
| https://github.com/user-attachments/files/19307868/input.zip | product exploit |
| https://github.com/upx/upx/commit/e0b6ff192412f5bb5364c1948f4f6b27a0cd5ea2 | patch |