Dnsmasq: dnsmasq: out-of-bounds read in find_soa() due to missing extrabytes validation
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | affected | — |
| Red Hat | Red Hat Enterprise Linux 6 | unaffected | — |
| Red Hat | Red Hat Enterprise Linux 7 | unaffected | — |
| Red Hat | Red Hat Enterprise Linux 8 | unaffected | — |
| Red Hat | Red Hat Enterprise Linux 9 | unaffected | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | unaffected | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | unaffected | — |
| Red Hat | Red Hat OpenShift Container Platform 5 | unaffected | — |
Configuration 1 [-]
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Configuration 2 [-]
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No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dnsmasq | Dnsmasq |
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| Redhat | Enterprise Linux |
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| Redhat | Openshift Container Platform |
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Vendor Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. The fix is available in dnsmasq 2.93rc1 and later.
| Source | ID | Title |
|---|---|---|
Ubuntu USN |
USN-8542-1 | Dnsmasq vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.256% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat rhel Els
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| CPEs | cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
cpe:/a:redhat:enterprise_linux:10 cpe:/a:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:9 cpe:/a:redhat:openshift:5 cpe:/o:redhat:rhel_els:6 cpe:/o:redhat:rhel_els:7 |
| Vendors & Products |
Redhat rhel Els
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Dnsmasq
Dnsmasq dnsmasq Redhat openshift Container Platform |
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| Vendors & Products |
Dnsmasq
Dnsmasq dnsmasq Redhat openshift Container Platform |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An out-of-bounds read vulnerability exists in dnsmasq's find_soa() function in src/rfc1035.c. When parsing NS section records, extract_name() is called with extrabytes=0, failing to validate that 10 additional bytes exist for fixed-length DNS record fields. A remote attacker controlling a DNS zone can exploit this via a crafted NXDOMAIN response to cause a 10-byte heap out-of-bounds read, potentially accessing stale data from prior transactions. | |
| Title | Dnsmasq: dnsmasq: out-of-bounds read in find_soa() due to missing extrabytes validation | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
|
| Weaknesses | CWE-125 | |
| CPEs | cpe:/a:redhat:openshift:4 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 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
|
| References |
| |
| Metrics |
cvssV3_1
|