OESA-2023-1358 (CVE-2023-31130)
Vulnerability from osv_openeuler – Published: 2023-06-17 11:05 – Updated: 2026-08-06 11:05 – Source websiteThis is c-ares, an asynchronous resolver library. It is intended for applications which need to perform DNS queries without blocking, or need to perform multiple
Security Fix(es):
c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist(). However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues. This issue has been fixed in 1.19.1. (CVE-2023-31130)
c-ares is an asynchronous resolver library. When /dev/urandom or RtlGenRandom() are unavailable, c-ares uses rand() to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand() so will generate predictable output. Input from the random number generator is fed into a non-compilant RC4 implementation and may not be as strong as the original RC4 implementation. No attempt is made to look for modern OS-provided CSPRNGs like arc4random() that is widely available. This issue has been fixed in version 1.19.1.(CVE-2023-31147)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"c-ares-1.16.1-7.oe1.aarch64.rpm",
"c-ares-devel-1.16.1-7.oe1.aarch64.rpm",
"c-ares-debuginfo-1.16.1-7.oe1.aarch64.rpm",
"c-ares-debugsource-1.16.1-7.oe1.aarch64.rpm"
],
"noarch": [
"c-ares-help-1.16.1-7.oe1.noarch.rpm"
],
"src": [
"c-ares-1.16.1-7.oe1.src.rpm"
],
"x86_64": [
"c-ares-1.16.1-7.oe1.x86_64.rpm",
"c-ares-devel-1.16.1-7.oe1.x86_64.rpm",
"c-ares-debuginfo-1.16.1-7.oe1.x86_64.rpm",
"c-ares-debugsource-1.16.1-7.oe1.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:20.03-LTS-SP3",
"name": "c-ares",
"purl": "pkg:rpm/openEuler/c-ares\u0026distro=openEuler-20.03-LTS-SP3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.16.1-7.oe1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "Medium"
},
"details": "This is c-ares, an asynchronous resolver library. It is intended for applications which need to perform DNS queries without blocking, or need to perform multiple\n\nSecurity Fix(es):\n\nc-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular \u0026quot;0::00:00:00/2\u0026quot; was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist(). However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues. This issue has been fixed in 1.19.1.\n(CVE-2023-31130)\n\nc-ares is an asynchronous resolver library. When /dev/urandom or RtlGenRandom() are unavailable, c-ares uses rand() to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand() so will generate predictable output. Input from the random number generator is fed into a non-compilant RC4 implementation and may not be as strong as the original RC4 implementation. No attempt is made to look for modern OS-provided CSPRNGs like arc4random() that is widely available. This issue has been fixed in version 1.19.1.(CVE-2023-31147)",
"id": "OESA-2023-1358",
"modified": "2026-08-06T11:05:49Z",
"published": "2023-06-17T11:05:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1358"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-31130"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-31147"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "c-ares security update",
"upstream": [
"CVE-2023-31130",
"CVE-2023-31147"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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