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CVE-2018-7320

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the SIGCOMP protocol dissector could crash. This...

7.5 HighFix available

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the SIGCOMP protocol dissector could crash. This was addressed in epan/dissectors/packet-sigcomp.c by validating operand offsets.

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

2.62%Up 1.4 points since Apr 14, 2021
90%50%10%1%

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, the SIGCOMP protocol dissector could crash. This was addressed in epan/dissectors/packet-sigcomp.c by validating operand offsets.

Record
CVE-2018-7320
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
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, the SIGCOMP protocol dissector could crash. This was addressed in epan/dissectors/packet-sigcomp.c by validating operand offsets.

Record
CVE-2018-7320
Updated
2026-11-02
EUVDEUVD-2018-19052 No score

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the SIGCOMP protocol dissector could crash. This was addressed in epan/dissectors/packet-sigcomp.c by validating operand offsets.

Record
EUVD-2018-19052
Updated
2026-11-03
GitHub AdvisoriesGHSA-45vr-8xvm-rhpc 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the SIGCOMP protocol dissector could crash. This...

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the SIGCOMP protocol dissector could crash. This was addressed in epan/dissectors/packet-sigcomp.c by validating operand offsets.

Record
GHSA-45vr-8xvm-rhpc
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
OSV 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the SIGCOMP protocol dissector could crash. This was addressed in epan/dissectors/packet-sigcomp.c by validating operand offsets.

Record
CVE-2018-7320
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-2018-7320 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the SIGCOMP protocol dissector could crash. This was addressed in epan/dissectors/packet-sigcomp.c by validating operand offsets.

Record
DEBIAN-CVE-2018-7320
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
Show 5 moreShow less
OSVUBUNTU-CVE-2018-7320 7.5

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, the SIGCOMP protocol dissector could crash. This was addressed in epan/dissectors/packet-sigcomp.c by validating operand offsets.

Record
UBUNTU-CVE-2018-7320
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
OSVopenSUSE-SU-2024:11513-1 No score

libwireshark14-3.4.8-1.2 on GA media

These are all security issues fixed in the libwireshark14-3.4.8-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11513-1
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
PackageAffectedFixed
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
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
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
Show 10 moreShow less
Affected packages
PackageAffectedFixed
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
wireshark
openSUSE:Tumbleweed
From an advisory covering 163 CVEs
 before 3.4.8-1.2
3.4.8-1.2

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2018-7320 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 2.62%, the 85th percentile. Fixed in wireshark 2.4.5-1.

References

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Left out here: 11 references. The JSON record has them.

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