Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation te
위협 신호 · CVSS · EPSS · KEV
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CVSS
5.3medium
이론적 심각도 점수
EPSS
1.1%상위 36.3%
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KEV
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권장 대응 기한14일 이내CISA SSVC 기준
2주 이내 패치 — 우선 조치 대상
자동화 가능외부 노출· KEV 미등재 · 자동화 가능 · 부분 영향 · 외부 노출
CVSS 벡터 · 메트릭
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버전별 점수
CVSS 3.15.3MEDIUM· 악용성 3.9· 영향도 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N약점 (CWE)
상세 설명
Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports <LF>.<CR><LF> but some other popular e-mail servers do not.
AI 심층 분석
공격 시나리오 · 재현 가능한 PoC 페이로드 · 즉시 적용 가능한 차단 패치를 한 번에 받아 보세요. 보안 운영팀이 그대로 점검·티켓팅에 쓸 수 있는 형태로 정리해 드립니다.
영향받는 제품·버전
- exim exim< 4.97.1other
- fedoraproject extra_packages_for_enterprise_linuxlinux
- fedoraproject extra_packages_for_enterprise_linuxlinux
- fedoraproject extra_packages_for_enterprise_linuxlinux
- fedoraproject fedoraother
- fedoraproject fedoraother
- debian debian_linuxlinux
영향받는 구성 (CPE) 7
- exim exim< 4.97.1cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*
- fedoraproject extra_packages_for_enterprise_linux 7.0cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:*
- fedoraproject extra_packages_for_enterprise_linux 8.0cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:*
- fedoraproject extra_packages_for_enterprise_linux 9.0cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:9.0:*:*:*:*:*:*:*
- fedoraproject fedora 38cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
- fedoraproject fedora 39cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
- debian debian_linux 10.0cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
참고 자료 22
- http://www.openwall.com/lists/oss-security/2023/12/24/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2023/12/25/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2023/12/29/2Mailing ListMitigationThird Party Advisory
- http://www.openwall.com/lists/oss-security/2024/01/01/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2024/01/01/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2024/01/01/3Mailing ListThird Party Advisory
- https://bugs.exim.org/show_bug.cgi?id=3063Issue TrackingVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2255852Issue TrackingThird Party Advisory
- https://fahrplan.events.ccc.de/congress/2023/fahrplan/events/11782.htmlTechnical Description
- https://github.com/Exim/exim/blob/master/doc/doc-txt/cve-2023-51766MitigationVendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/01/msg00002.htmlMailing ListThird Party Advisory
- https://lwn.net/Articles/956533/Third Party Advisory
- https://sec-consult.com/blog/detail/smtp-smuggling-spoofing-e-mails-worldwide/Technical DescriptionThird Party Advisory
- https://www.openwall.com/lists/oss-security/2023/12/23/2Issue TrackingMailing ListThird Party Advisory
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