CVE-2018-7331

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite...

7.5 HighFix available

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite loop that was addressed by validating a length.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.34%Up 1.1 points since Apr 14, 2021

What each source reports

NVD Score used 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite loop that was addressed by validating a length.

Record: CVE-2018-7331
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-835
Updated: 2026-11-02

CVE List No score

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite loop that was addressed by validating a length.

Record: CVE-2018-7331
Updated: 2026-11-02

EUVDEUVD-2018-19063 No score

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite loop that was addressed by validating a length.

Record: EUVD-2018-19063
Updated: 2026-11-03

GitHub AdvisoriesGHSA-qg28-39x2-3cgw 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite...

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite loop that was addressed by validating a length.

Record: GHSA-qg28-39x2-3cgw
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-835
Updated: 2026-11-02

OSV 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite loop that was addressed by validating a length.

Record: CVE-2018-7331
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2018-7331 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite loop that was addressed by validating a length.

Record: DEBIAN-CVE-2018-7331
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

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OSVUBUNTU-CVE-2018-7331 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-ber.c had an infinite loop that was addressed by validating a length.

Record: UBUNTU-CVE-2018-7331
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVMGASA-2018-0151 No score

Updated wireshark packages fix security vulnerabilities

The SIGCOMP dissector could crash (CVE-2018-7320).

Multiple dissectors could go into large infinite loops. All ASN.1 BER dissectors, along with the DICOM, DMP, LLTD, OpenFlow, RELOAD, RPCoRDMA, RPKI-Router, S7COMM, SCCP, Thread, Thrift, USB, and WCCP dissectors were susceptible (CVE-2018-7321,CVE-2018-7322, CVE-2018-7323, CVE-2018-7324, CVE-2018-7325, CVE-2018-7326, CVE-2018-7327, CVE-2018-7328, CVE-2018-7329, CVE-2018-7330, CVE-2018-7331, CVE-2018-7332, CVE-2018-7333).

The UMTS MAC dissector could crash (CVE-2018-7334).

The IEEE 802.11 dissector could crash (CVE-2018-7335)

The FCP dissector could crash (CVE-2018-7336).

The IPMI dissector could crash (CVE-2018-7417).

The SIGCOMP dissector could crash (CVE-2018-7418).

The NBAP disssector could crash (CVE-2018-7419).

The pcapng file parser could crash (CVE-2018-7420).

The LWAPP dissector could crash (CVE-2018-9256).

The MP4 dissector could crash (CVE-2018-9259).

The IEEE 802.15.4 dissector could crash (CVE-2018-9260).

The NBAP dissector could crash (CVE-2018-9261).

The VLAN dissector could crash (CVE-2018-9262).

The Kerberos dissector could crash (CVE-2018-9263).

The ADB dissector could crash (CVE-2018-9264).

Memory leaks in multiple dissectors (CVE-2018-9265, CVE-2018-9266, CVE-2018-9267, CVE-2018-9268, CVE-2018-9269, CVE-2018-9270, CVE-2018-9271, CVE-2018-9272, CVE-2018-9273, CVE-2018-9274).

Record: MGASA-2018-0151
Updated: 2026-11-02

OSVSUSE-SU-2018:0811-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Security issue fixed (bsc#1082692):

CVE-2018-7335: The IEEE 802.11 dissector could crash (wnpa-sec-2018-05)
CVE-2018-7321: thrift long dissector loop (dissect_thrift_map)
CVE-2018-7322: DICOM: inifinite loop (dissect_dcm_tag)
CVE-2018-7323: WCCP: very long loop (dissect_wccp2_alternate_mask_value_set_element)
CVE-2018-7324: SCCP: infinite loop (dissect_sccp_optional_parameters)
CVE-2018-7325: RPKI-Router Protocol: infinite loop (dissect_rpkirtr_pdu)
CVE-2018-7326: LLTD: infinite loop (dissect_lltd_tlv)
CVE-2018-7327: openflow_v6: infinite loop (dissect_openflow_bundle_control_v6)
CVE-2018-7328: USB-DARWIN: long loop (dissect_darwin_usb_iso_transfer)
CVE-2018-7329: S7COMM: infinite loop (s7comm_decode_ud_cpu_alarm_main)
CVE-2018-7330: thread_meshcop: infinite loop (get_chancount)
CVE-2018-7331: GTP: infinite loop (dissect_gprscdr_GGSNPDPRecord, dissect_ber_set)
CVE-2018-7332: RELOAD: infinite loop (dissect_statans)
CVE-2018-7333: RPCoRDMA: infinite loop in get_write_list_chunk_count
CVE-2018-7421: Multiple dissectors could go into large infinite loops (wnpa-sec-2018-06)
CVE-2018-7334: The UMTS MAC dissector could crash (wnpa-sec-2018-07)
CVE-2018-7337: The DOCSIS dissector could crash (wnpa-sec-2018-08)
CVE-2018-7336: The FCP dissector could crash (wnpa-sec-2018-09)
CVE-2018-7320: The SIGCOMP dissector could crash (wnpa-sec-2018-10)
CVE-2018-7420: The pcapng file parser could crash (wnpa-sec-2018-11)
CVE-2018-7417: The IPMI dissector could crash (wnpa-sec-2018-12)
CVE-2018-7418: The SIGCOMP dissector could crash (wnpa-sec-2018-13)
CVE-2018-7419: The NBAP disssector could crash (wnpa-sec-2018-14)
CVE-2017-17997: Misuse of NULL pointer in MRDISC dissector (bsc#1077080).

Record: SUSE-SU-2018:0811-1
Updated: 2026-11-02

OSVSUSE-SU-2018:0867-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Security issue fixed (bsc#1082692):

CVE-2018-7335: The IEEE 802.11 dissector could crash (wnpa-sec-2018-05)
CVE-2018-7321: thrift long dissector loop (dissect_thrift_map)
CVE-2018-7322: DICOM: inifinite loop (dissect_dcm_tag)
CVE-2018-7323: WCCP: very long loop (dissect_wccp2_alternate_mask_value_set_element)
CVE-2018-7324: SCCP: infinite loop (dissect_sccp_optional_parameters)
CVE-2018-7325: RPKI-Router Protocol: infinite loop (dissect_rpkirtr_pdu)
CVE-2018-7326: LLTD: infinite loop (dissect_lltd_tlv)
CVE-2018-7327: openflow_v6: infinite loop (dissect_openflow_bundle_control_v6)
CVE-2018-7328: USB-DARWIN: long loop (dissect_darwin_usb_iso_transfer)
CVE-2018-7329: S7COMM: infinite loop (s7comm_decode_ud_cpu_alarm_main)
CVE-2018-7330: thread_meshcop: infinite loop (get_chancount)
CVE-2018-7331: GTP: infinite loop (dissect_gprscdr_GGSNPDPRecord, dissect_ber_set)
CVE-2018-7332: RELOAD: infinite loop (dissect_statans)
CVE-2018-7333: RPCoRDMA: infinite loop in get_write_list_chunk_count
CVE-2018-7421: Multiple dissectors could go into large infinite loops (wnpa-sec-2018-06)
CVE-2018-7334: The UMTS MAC dissector could crash (wnpa-sec-2018-07)
CVE-2018-7337: The DOCSIS dissector could crash (wnpa-sec-2018-08)
CVE-2018-7336: The FCP dissector could crash (wnpa-sec-2018-09)
CVE-2018-7320: The SIGCOMP dissector could crash (wnpa-sec-2018-10)
CVE-2018-7420: The pcapng file parser could crash (wnpa-sec-2018-11)
CVE-2018-7417: The IPMI dissector could crash (wnpa-sec-2018-12)
CVE-2018-7418: The SIGCOMP dissector could crash (wnpa-sec-2018-13)
CVE-2018-7419: The NBAP disssector could crash (wnpa-sec-2018-14)
CVE-2017-17997: Misuse of NULL pointer in MRDISC dissector (bsc#1077080).

Record: SUSE-SU-2018:0867-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`wireshark` Debian:12	before 2.4.5-1	2.4.5-1
`wireshark` Debian:13	before 2.4.5-1	2.4.5-1
`wireshark` Debian:14	before 2.4.5-1	2.4.5-1
`wireshark` Debian:8 From an advisory covering 41 CVEs	before 1.12.1+g01b65bf-4+deb8u16, plus listed versions 1.12.1+g01b65bf-41.12.1+g01b65bf-4+deb8u11.12.1+g01b65bf-4+deb8u101.12.1+g01b65bf-4+deb8u111.12.1+g01b65bf-4+deb8u12 Show 22 moreShow less 1.12.1+g01b65bf-4+deb8u131.12.1+g01b65bf-4+deb8u141.12.1+g01b65bf-4+deb8u151.12.1+g01b65bf-4+deb8u21.12.1+g01b65bf-4+deb8u31.12.1+g01b65bf-4+deb8u41.12.1+g01b65bf-4+deb8u51.12.1+g01b65bf-4+deb8u61.12.1+g01b65bf-4+deb8u6~deb7u11.12.1+g01b65bf-4+deb8u6~deb7u101.12.1+g01b65bf-4+deb8u6~deb7u111.12.1+g01b65bf-4+deb8u6~deb7u21.12.1+g01b65bf-4+deb8u6~deb7u31.12.1+g01b65bf-4+deb8u6~deb7u41.12.1+g01b65bf-4+deb8u6~deb7u51.12.1+g01b65bf-4+deb8u6~deb7u61.12.1+g01b65bf-4+deb8u6~deb7u71.12.1+g01b65bf-4+deb8u6~deb7u81.12.1+g01b65bf-4+deb8u6~deb7u91.12.1+g01b65bf-4+deb8u71.12.1+g01b65bf-4+deb8u81.12.1+g01b65bf-4+deb8u9	1.12.1+g01b65bf-4+deb8u16
`wireshark` Mageia:6 From an advisory covering 38 CVEs	before 2.2.14-1.mga6	2.2.14-1.mga6
`wireshark` SUSE:Linux Enterprise Desktop 12 SP2 From an advisory covering 24 CVEs	before 2.2.13-48.21.1	2.2.13-48.21.1
`wireshark` SUSE:Linux Enterprise Desktop 12 SP3 From an advisory covering 24 CVEs	before 2.2.13-48.21.1	2.2.13-48.21.1
`wireshark` SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 From an advisory covering 24 CVEs	before 2.2.13-48.21.1	2.2.13-48.21.1
`wireshark` SUSE:Linux Enterprise Software Development Kit 12 SP2 From an advisory covering 24 CVEs	before 2.2.13-48.21.1	2.2.13-48.21.1
`wireshark` SUSE:Linux Enterprise Software Development Kit 12 SP3 From an advisory covering 24 CVEs	before 2.2.13-48.21.1	2.2.13-48.21.1

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Affected packages
Package	Affected	Fixed
`wireshark` SUSE:Linux Enterprise Server 12 SP2 From an advisory covering 24 CVEs	before 2.2.13-48.21.1	2.2.13-48.21.1
`wireshark` SUSE:Linux Enterprise Server for SAP Applications 12 SP2 From an advisory covering 24 CVEs	before 2.2.13-48.21.1	2.2.13-48.21.1
`wireshark` SUSE:Linux Enterprise Server 12 SP3 From an advisory covering 24 CVEs	before 2.2.13-48.21.1	2.2.13-48.21.1
`wireshark` SUSE:Linux Enterprise Server for SAP Applications 12 SP3 From an advisory covering 24 CVEs	before 2.2.13-48.21.1	2.2.13-48.21.1
`wireshark` SUSE:Linux Enterprise Software Development Kit 11 SP4 From an advisory covering 24 CVEs	before 2.2.13-40.22.1	2.2.13-40.22.1
`wireshark` SUSE:Linux Enterprise Server 11 SP4 From an advisory covering 24 CVEs	before 2.2.13-40.22.1	2.2.13-40.22.1
`wireshark` SUSE:Linux Enterprise Server for SAP Applications 11 SP4 From an advisory covering 24 CVEs	before 2.2.13-40.22.1	2.2.13-40.22.1
`wireshark` Ubuntu:14.04:LTS	before 2.6.3-1~ubuntu14.04.1, plus listed versions 1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-11.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.1	2.6.3-1~ubuntu14.04.1
`wireshark` Ubuntu:16.04:LTS	before 2.6.3-1~ubuntu16.04.1, plus listed versions 1.12.7+g7fc8978-11.12.8+g5b6e543-22.0.1+g59ea380-3build12.0.2+ga16e22e-12.2.6+g32dac6a-2ubuntu0.16.04	2.6.3-1~ubuntu16.04.1
`wireshark` Ubuntu:18.04:LTS	before 2.6.3-1~ubuntu18.04.1, plus listed versions 2.4.2-12.4.3-12.4.4-12.4.5-1	2.6.3-1~ubuntu18.04.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-7331 is a high vulnerability (CVSS 7.5) in Wireshark, published February 23, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.34%, the 83rd percentile. Fixed in wireshark 2.4.5-1.

References

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