Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow. NOTE: versions 1.27 and 1.28 do not require authentication to exploit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Chrony | Tuxfamily | * | 1.28 (including) |
| Chrony | Tuxfamily | 1.0 (including) | 1.0 (including) |
| Chrony | Tuxfamily | 1.1 (including) | 1.1 (including) |
| Chrony | Tuxfamily | 1.18 (including) | 1.18 (including) |
| Chrony | Tuxfamily | 1.19 (including) | 1.19 (including) |
| Chrony | Tuxfamily | 1.19.99.1 (including) | 1.19.99.1 (including) |
| Chrony | Tuxfamily | 1.19.99.2 (including) | 1.19.99.2 (including) |
| Chrony | Tuxfamily | 1.19.99.3 (including) | 1.19.99.3 (including) |
| Chrony | Tuxfamily | 1.20 (including) | 1.20 (including) |
| Chrony | Tuxfamily | 1.21 (including) | 1.21 (including) |
| Chrony | Tuxfamily | 1.21-pre1 (including) | 1.21-pre1 (including) |
| Chrony | Tuxfamily | 1.23 (including) | 1.23 (including) |
| Chrony | Tuxfamily | 1.23-pre1 (including) | 1.23-pre1 (including) |
| Chrony | Tuxfamily | 1.23.1 (including) | 1.23.1 (including) |
| Chrony | Tuxfamily | 1.24 (including) | 1.24 (including) |
| Chrony | Tuxfamily | 1.24-pre1 (including) | 1.24-pre1 (including) |
| Chrony | Tuxfamily | 1.25 (including) | 1.25 (including) |
| Chrony | Tuxfamily | 1.25-pre1 (including) | 1.25-pre1 (including) |
| Chrony | Tuxfamily | 1.25-pre2 (including) | 1.25-pre2 (including) |
| Chrony | Tuxfamily | 1.26 (including) | 1.26 (including) |
| Chrony | Tuxfamily | 1.26-pre1 (including) | 1.26-pre1 (including) |
| Chrony | Tuxfamily | 1.27 (including) | 1.27 (including) |
| Chrony | Tuxfamily | 1.27-pre1 (including) | 1.27-pre1 (including) |
| Chrony | Tuxfamily | 1.28-pre1 (including) | 1.28-pre1 (including) |