ALT-PU-2023-5121-4

BDU:2018-00106

HIGH7.5

Уязвимость функции ares_parse_naptr_reply библиотеки асинхронных DNS-запросов c-ares, позволяющая нарушителю выполнить чтение за границами буфера в памяти

Published: 2018-01-24Modified: 2021-03-23

CVSS 3.xHIGH 7.5

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS 2.0MEDIUM 5.0

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:N

References

CVE-2017-1000381

BDU:2021-04594

LOW3.3

Уязвимость функций ares_destroy() и ares_getaddrinfo() библиотеки асинхронных DNS-запросов C-ares, связанная с использованием памяти после её освобождения, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2021-09-20

CVSS 3.xLOW 3.3

CVSS:3.x/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS 2.0LOW 2.1

CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:N/A:P

References

CVE-2020-14354

BDU:2023-01258

HIGH8.6

Уязвимость функции ares_set_sortlist библиотеки асинхронных DNS-запросов c-ares, позволяющая нарушителю вызвать отказ в обслуживании или оказать ограниченное влияния на конфиденциальность и целостность

Published: 2023-03-17Modified: 2026-01-20

CVSS 3.xHIGH 8.6

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

CVSS 2.0CRITICAL 9.0

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:C

References

CVE-2022-4904

BDU:2023-05898

CRITICAL9.8

Уязвимость функции ares_parse_soa_reply() библиотеки асинхронных DNS-запросов C-ares, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации

Published: 2023-09-21Modified: 2025-03-19

CVSS 3.xCRITICAL 9.8

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0CRITICAL 10.0

CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C

References

CVE-2020-22217

CVE-2016-5180

CRITICAL9.8

Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly execute arbitrary code via a hostname with an escaped trailing dot.

Published: 2016-10-03Modified: 2025-04-12

CVSS 2.0HIGH 7.5

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS 3.xCRITICAL 9.8

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

CVE-2017-1000381

HIGH7.5

The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered to read memory outside of the given input buffer if the passed in DNS response packet was crafted in a particular way.

Published: 2017-07-07Modified: 2025-04-20

CVSS 2.0MEDIUM 5.0

CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS 3.xHIGH 7.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

CVE-2020-14354

LOW3.3

A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is called prior to ares_getaddrinfo() completing. This flaw possibly allows an attacker to crash the service that uses c-ares lib. The highest threat from this vulnerability is to this service availability.

Published: 2021-05-13Modified: 2024-11-21

CVSS 2.0LOW 2.1

CVSS:2.0/AV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS 3.xLOW 3.3

CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

CVE-2020-22217

MEDIUM5.9

Buffer overflow vulnerability in c-ares before 1_16_1 thru 1_17_0 via function ares_parse_soa_reply in ares_parse_soa_reply.c.

Published: 2023-08-22Modified: 2024-11-21

CVSS 3.xMEDIUM 5.9

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References

CVE-2022-4904

HIGH8.6

A flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity of the input string, which allows a possible arbitrary length stack overflow. This issue may cause a denial of service or a limited impact on confidentiality and integrity.

Published: 2023-03-06Modified: 2025-12-02

CVSS 3.xHIGH 8.6

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

References

CVE-2023-31124

LOW3.7

c-ares is an asynchronous resolver library. When cross-compiling c-ares and using the autotools build system, CARES_RANDOM_FILE will not be set, as seen when cross compiling aarch64 android. This will downgrade to using rand() as a fallback which could allow an attacker to take advantage of the lack of entropy by not using a CSPRNG. This issue was patched in version 1.19.1.

Published: 2023-05-25Modified: 2025-02-13

CVSS 3.xLOW 3.7

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

References

CVE-2023-31130

MEDIUM6.4

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.

Published: 2023-05-25Modified: 2025-02-13

CVSS 3.xMEDIUM 6.4

CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

References

CVE-2023-31147

MEDIUM6.5

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.

Published: 2023-05-25Modified: 2024-11-21

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References

CVE-2023-32067

HIGH7.5

c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1.

Published: 2023-05-25Modified: 2024-11-21

CVSS 3.xHIGH 7.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Package update c-ares in branch c10f1

Closed issues (13)

Уязвимость функции ares_parse_naptr_reply библиотеки асинхронных DNS-запросов c-ares, позволяющая нарушителю выполнить чтение за границами буфера в памяти

Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly execute arbitrary code via a hostname with an escaped trailing dot.

The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered to read memory outside of the given input buffer if the passed in DNS response packet was crafted in a particular way.

A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is called prior to ares_getaddrinfo() completing. This flaw possibly allows an attacker to crash the service that uses c-ares lib. The highest threat from this vulnerability is to this service availability.

Buffer overflow vulnerability in c-ares before 1_16_1 thru 1_17_0 via function ares_parse_soa_reply in ares_parse_soa_reply.c.

A flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity of the input string, which allows a possible arbitrary length stack overflow. This issue may cause a denial of service or a limited impact on confidentiality and integrity.