Thumbor convolution filter allows divide-by-zero in C extension leading to remote DoS
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| thumbor | thumbor | affected |
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Github GHSA |
GHSA-cqjp-jf4r-h5q9 | Thumbor convolution filter allows divide-by-zero in C extension leading to remote DoS |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.750% probability within 30 days)
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| First Time appeared |
Thumbor
Thumbor thumbor |
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| Vendors & Products |
Thumbor
Thumbor thumbor |
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| Metrics |
ssvc
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| Description | 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. | |
| Title | Thumbor convolution filter allows divide-by-zero in C extension leading to remote DoS | |
| Weaknesses | CWE-20 CWE-369 |
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| References |
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| Metrics |
cvssV3_1
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