CVE-2018-12020 - Use of Incorrectly-Resolved Name or Reference

Severity

50%

Complexity

99%

Confidentiality

48%

mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and verification actions, which allows remote attackers to spoof the output that GnuPG sends on file descriptor 2 to other programs that use the "--status-fd 2" option. For example, the OpenPGP data might represent an original filename that contains line feed characters in conjunction with GOODSIG or VALIDSIG status codes.

mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and verification actions, which allows remote attackers to spoof the output that GnuPG sends on file descriptor 2 to other programs that use the "--status-fd 2" option. For example, the OpenPGP data might represent an original filename that contains line feed characters in conjunction with GOODSIG or VALIDSIG status codes.

CVSS 3.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N).

Overview

First reported 6 years ago

2018-06-08 21:29:00

Last updated 5 years ago

2019-10-03 00:03:00

Affected Software

Red Hat Enterprise Linux Desktop 6.0

6.0

RedHat Enterprise Linux Desktop 7.0

7.0

Red Hat Enterprise Linux Server 6.0

6.0

RedHat Enterprise Linux Server 7.0

7.0

Red Hat Enterprise Linux Server Advanced mission critical Update Support (AUS) 7.6

7.6

Red Hat Enterprise Linux Server Extended Update Support (EUS) 7.5

7.5

Red Hat Enterprise Linux Server Extended Update Support (EUS) 7.6

7.6

Red Hat Enterprise Linux Server Telecommunications Update Service (TUS) 7.6

7.6

Red Hat Enterprise Linux Workstation 6.0

6.0

RedHat Enterprise Linux Workstation 7.0

7.0

Canonical Ubuntu Linux 12.04 ESM (Extended Security Maintenance)

12.04

Canonical Ubuntu Linux 14.04 LTS (Long-Term Support)

14.04

Canonical Ubuntu Linux 16.04 LTS (Long-Term Support)

16.04

Canonical Ubuntu Linux 17.10

17.10

Canonical Ubuntu Linux 18.04 LTS Edition

18.04

Canonical Ubuntu Linux 18.10

18.10

Canonical Ubuntu Linux 19.04

19.04

Debian Linux 8.0 (Jessie)

8.0

Debian Linux 9.0

9.0

References

http://openwall.com/lists/oss-security/2018/06/08/2

Mailing List, Third Party Advisory

http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html

Third Party Advisory, VDB Entry

20190430 OpenPGP and S/MIME signature forgery attacks in multiple email clients

Mailing List, Third Party Advisory

[oss-security] 20190430 Spoofing OpenPGP and S/MIME Signatures in Emails (multiple clients)

Mailing List, Third Party Advisory

104450

Third Party Advisory, VDB Entry

1041051

Third Party Advisory, VDB Entry

RHSA-2018:2180

Third Party Advisory

RHSA-2018:2181

Third Party Advisory

https://dev.gnupg.org/T4012

Patch, Vendor Advisory

https://github.com/RUB-NDS/Johnny-You-Are-Fired

Technical Description, Third Party Advisory

https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf

Technical Description, Third Party Advisory

https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0

Third Party Advisory

https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000425.html

Mailing List, Vendor Advisory

USN-3675-1

Third Party Advisory

USN-3675-2

Third Party Advisory

USN-3675-3

Third Party Advisory

USN-3964-1

Third Party Advisory

DSA-4222

Third Party Advisory

DSA-4223

Third Party Advisory

DSA-4224

Third Party Advisory

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