HOMEVULNERABILITIESCVE-2017-17848
HIGH

CVE-2017-17848

CWE-347Published: December 27, 2017· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

An issue was discovered in Enigmail before 1.9.9. In a variant of CVE-2017-17847, signature spoofing is possible for multipart/related messages because a signed message part can be referenced with a cid: URI but not actually displayed. In other words, the entire containing message appears to be signed, but the recipient does not see any of the signed text.

NVD Source

Technical Analysis

CVE-2017-17848 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Vendors & Products

Debian1 product(s)
debian linux
enigmail1 product(s)
enigmail
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
ADVISORYhttp://seclists.org/fulldisclosure/2019/Apr/38
ADVISORYhttp://www.openwall.com/lists/oss-security/2019/04/30/4
ADVISORYhttps://lists.debian.org/debian-lts-announce/2017/12/msg00021.html
ADVISORYhttps://lists.debian.org/debian-security-announce/2017/msg00333.html
ADVISORYhttps://sourceforge.net/p/enigmail/bugs/709/
ADVISORYhttps://www.debian.org/security/2017/dsa-4070
ADVISORYhttp://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
ADVISORYhttp://seclists.org/fulldisclosure/2019/Apr/38
ADVISORYhttp://www.openwall.com/lists/oss-security/2019/04/30/4
ADVISORYhttps://lists.debian.org/debian-lts-announce/2017/12/msg00021.html
ADVISORYhttps://lists.debian.org/debian-security-announce/2017/msg00333.html
ADVISORYhttps://sourceforge.net/p/enigmail/bugs/709/
ADVISORYhttps://www.debian.org/security/2017/dsa-4070

All References (18)

→
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.htmlThird Party Advisory · VDB Entry
→
http://seclists.org/fulldisclosure/2019/Apr/38Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2019/04/30/4Mailing List · Third Party Advisory
→
https://github.com/RUB-NDS/Johnny-You-Are-Fired
→
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
→
https://lists.debian.org/debian-lts-announce/2017/12/msg00021.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-security-announce/2017/msg00333.htmlMailing List · Third Party Advisory
→
https://sourceforge.net/p/enigmail/bugs/709/Third Party Advisory
→
https://www.debian.org/security/2017/dsa-4070Third Party Advisory
→
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.htmlThird Party Advisory · VDB Entry
→
http://seclists.org/fulldisclosure/2019/Apr/38Mailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2019/04/30/4Mailing List · Third Party Advisory
→
https://github.com/RUB-NDS/Johnny-You-Are-Fired
→
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
→
https://lists.debian.org/debian-lts-announce/2017/12/msg00021.htmlMailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2017-17848
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-347
CISA KEVNo
Affected2 vendor(s)
PublishedDec 27, 2017

Related CVEs (CWE-347)

CVE-2026-48558
KEV10.0
CVE-2024-32962
10.0
CVE-2026-56451
10.0
CVE-2026-44748
9.9
CVE-2020-27540
9.8
CVE-2018-1000076
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-17848 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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