| Package | Affected versions | Patched versions |
|---|---|---|
| chrony | = 1.0= 1.1= 1.18= 1.19= 1.19.99.1= 1.19.99.2= 1.19.99.3= 1.20= 1.21= 1.23= 1.23.1= 1.24= 1.25= 1.26= 1.27= 1.28≤ 1.28 |
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.
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