Tftp: tftp-hpa: denial of service due to out-of-bounds read/write in remap engine
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| Red Hat | Red Hat Enterprise Linux 10 | affected |
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| Red Hat | Red Hat Enterprise Linux 10 | affected |
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| Red Hat | Red Hat Enterprise Linux 8 | affected |
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| Red Hat | Red Hat Enterprise Linux 9 | affected |
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| Red Hat | Red Hat Enterprise Linux 9 | affected |
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| Red Hat | Red Hat Enterprise Linux 6 | unknown | — | ||||||
| Red Hat | Red Hat Enterprise Linux 7 | affected | — | ||||||
| Red Hat | Red Hat Hardened Images | unaffected | — |
No data.
No data.
No data available yet.
Vendor Workaround
To mitigate this issue, avoid enabling filename remapping with the `m/-map-file` option for the `in.tftpd` service unless strictly necessary. If filename remapping is required, ensure that any inverse (`~`) and abort (`a`) rules in the remap file do not include a non-empty custom error message. Changes to the `in.tftpd` configuration may require restarting the service to take effect.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.492% probability within 30 days)
| Type | Values Removed | Values Added |
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| References |
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| Type | Values Removed | Values Added |
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| CPEs | cpe:/o:redhat:enterprise_linux:10.3 | |
| References |
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| First Time appeared |
Redhat rhel Els
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| CPEs | cpe:/o:redhat:enterprise_linux:7 |
cpe:/o:redhat:rhel_els:6 cpe:/o:redhat:rhel_els:7 |
| Vendors & Products |
Redhat rhel Els
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| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/o:redhat:enterprise_linux:10.2 | |
| References |
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| Type | Values Removed | Values Added |
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| CPEs | cpe:/a:redhat:enterprise_linux:9::appstream | |
| References |
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| Type | Values Removed | Values Added |
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| CPEs | cpe:/a:redhat:enterprise_linux:8::appstream | |
| References |
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| References |
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| Metrics |
threat_severity
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threat_severity
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| Metrics |
ssvc
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| Description | A flaw was found in tftp-hpa. When the `in.tftpd` remap engine processes an inverse remap rule that also aborts with a non-empty custom error message, it can pass invalid match offsets to the `genmatchstring()` function. This leads to out-of-bounds read/write operations. A remote, unauthenticated attacker can exploit this vulnerability by sending a specially crafted request, causing the daemon to crash and resulting in a denial of service. | |
| Title | Tftp: tftp-hpa: denial of service due to out-of-bounds read/write in remap engine | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird |
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| Weaknesses | CWE-125 | |
| CPEs | cpe:/a:redhat:hummingbird:1 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird |
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| References |
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| Metrics |
cvssV3_1
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