Описание
Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:convolution(, , <should_normalize>) filter passes the user-controlled value to a C extension (thumbor/ext/filters/_convolution.c) where it is used as a divisor (for % and /) without validating columns > 0. When columns=0, the C code triggers undefined behavior; on x86_64 this reliably results in a fatal divide-by-zero trap (SIGFPE) and crashes the Thumbor process, causing a remote denial of service. This issue is fixed in 7.8.0.
| Релиз | Статус | Примечание |
|---|---|---|
| devel | not-affected | 7.8.0-1 |
| esm-apps/resolute | needs-triage | |
| jammy | DNE | |
| noble | DNE | |
| resolute | needs-triage | |
| upstream | released | 7.8.0-1 |
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7.5 High
CVSS3
Связанные уязвимости
Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:convolution(<matrix>, <columns>, <should_normalize>) filter passes the user-controlled <columns> value to a C extension (thumbor/ext/filters/_convolution.c) where it is used as a divisor (for % and /) without validating columns > 0. When columns=0, the C code triggers undefined behavior; on x86_64 this reliably results in a fatal divide-by-zero trap (SIGFPE) and crashes the Thumbor process, causing a remote denial of service. This issue is fixed in 7.8.0.
Thumbor is an open-source photo thumbnail service by globo.com. Prior ...
Thumbor convolution filter allows divide-by-zero in C extension leading to remote DoS
7.5 High
CVSS3